TUSB8041-Q1: Hub loses connection

David Schmidt98

Part Number: TUSB8041-Q1
Other Parts Discussed in Thread: TUSB8041

Hello,

I have a design where I use th TUSB8041-Q1 as a hub and there are USB2.0 and USB3.0 devices connected to the down stream ports of the hub.

I experience connection aborts to the devices connected to the down stream ports. To test this, I connected a USB2.0 USB stick and ran a continous read/write tests and after leaving it for the night I somtimes get a connection failure. And all devices connected to the downstream ports get disconnected at the same time when the error occurs.

I designed the hub with the layout recommendations in mind and tried to stick to the designs suggested in the datasheet.

How can I trace the cause of the error? Could it be a wrong configuration with the Misc I/Os of the hub? I suspected maybe there is an issue with suspend mode with one of the devices.

I have an EEPROM connected to the hub that I don't use right now.

I can provide the full schematic per email.

Thanks in advance.

over 6 years ago

0 JMMN over 6 years ago

TI__Guru 60865 points

Hi David,

Can you try running the continuous read/write test directly from the host to the failing USB2.0 stick? We often see that USB sticks have occasional r/w failures especially older USB stick drives that have been in use for awhile.

It sounds like the failing condition results in the USB host controller sending a USB reset that affects all the connected devices, this isn't uncommon.

Can you try running all USB 2.0 devices vs. all USB 3.0 devices? It would help to determine where exactly the problem is occurring. Also, if you are suspecting issues with suspend / resume you can download tools like usblpm.exe and sleeper.exe to test these modes.

A read/write error wouldn't be affected by the hub configuration. I'll send you a friend request so you can direct email me the schematic.

Regards,
JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

Hi JMMN,

thank you for your response!

I can say for sure that the USB stick is not the cause of the error because the connection aborts also occur without the USB stick attached to one port of the hub.

I will send the schematics to you and try the tools you suggested and report back!

0 JMMN over 6 years ago in reply to David Schmidt98

TI__Guru 60865 points

Hi David,

Thanks for sending your schematic. I noticed that you are setting the current limit for ports 1 and 2 to 500 mA, USB 3.0 ports should supply 900 mA. That could cause intermittent behavior for devices connected to the exposed port 2. Also, one minor concern is that by installing R43 and R47 you are enabling battery charging on those ports, which does not appear to be the intended design. Are you using the I2C for the TUSB8041?

Have you been able to narrow down the failing condition to USB 2 or USB 3?

Regards,
JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

Hi JMMN,

you are right, the current limit for port 2 should be 900 mA. But I tested it with port 1 and an USB2.0 stick and the error ocurred.

For the resistors R43 and R47, they are connected to PWRCTL1/BATEN1 and PWRCTL2/BATEN2 that means USB Port 1 Power On Control for Downstream Power / Battery Charging Enable. Again you are right, I did not intend to use battery charging, I interpreted this pin as power enable for the port.

Yes, I'm using an I2C EEPROM connected to the hub.

Should I leave the PWRCTL1 and PWRCTL2 pins floating? I'll disable my USB3.0 device and try to rerun my tests.

0 JMMN over 6 years ago in reply to David Schmidt98

TI__Guru 60865 points

Hi David,

The EEPROM settings will override the pin configurations. Can you send me the EEPROM file you are using?

Thanks,
JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

I attached the config file that I use.

I think the only setting I changed is that port2 and port3 are non-removable devices.

TUSB8041_configuration.txt

00	55	01010101	'ROM Signature - Do NOT modify!
01	51	01010001	'Vendor ID LSB - Can be modified
02	04	00000100	'Vendor ID MSB - Can be modified
03	40	01000000	'Product ID LSB - Can be modified
04	81	10000001	'Product ID MSB - Can be modified
05	10	00010000	'Device Configuration - U1U2 ON
06	00	00000000	'Battery Charging (1 = enabled) - Can be modified 
07	0F	00000011	'Device Removable - P3 and P4 not removable 
08	0F	00001111	'Port Used - Can be modified
09	00	00000000	'Phy Custom - Can be modified
0A	22	00100010	'Device Configuration 2 - Can be modified
0B	00	00000000	'usb 20 Port Polarity
20	09	00001001	'Language ID - Can be modified
21	04	00000100	'Language ID -  Can be modified
22	00	00000000	'Serial Number String Length -  Can be modified
23	00	00000000	'Manufacturer String Length 
24	00	00000000	'Product String Length 
F0	00	00000000	'Additional Features



'DATA FILE FORMAT: <HEX ADDRESS><TAB><HEX DATA>. EVERYTHING AFTER <DATA> IS IGNORED.
'USE <'> FOR IN-LINE COMMENTING.
'DATA FILE PARSING STOPS AT FIRST BLANK LINE.

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

So instead of running a r/w test with an USB stick, I just left the hub running with its non-removable devices and logged the USB activity with usblogview over the weekend.

This is with the USB3.0 device still activated. I will now deactivate it and see if there are still unplug events with the hub.

Thank you for your help!

8156.report.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html><head><title>USB Log</title></head>
<body>
 <h3>USB Log</h3>
<br><h4>Created by using <a href="http://www.nirsoft.net/" target="newwin">USBLogView</a></h4><p><table border="1" cellpadding="5"><tr bgcolor="E0E0E0">
<th>Event Type
<th>Event Time
<th>Device Name
<th>Description
<th>Device Type
<th>Drive Letter
<th>Serial Number
<th>Vendor ID
<th>Product ID
<th>Vendor Name
<th>Product Name
<th>Firmware Revision
<th>USB Class
<th>USB SubClass
<th>USB Protocol
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0004<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0004<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0007<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:44<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0004<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0004<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0007<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:45<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0004<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0004<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0007<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0004<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0004<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:49<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0007<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:50<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:50<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:50<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:50<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:50<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>10.11.2017 17:39:50<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
</table>

</body></html>

0 JMMN over 6 years ago in reply to David Schmidt98

TI__Guru 60865 points

Hi David,

Yes, it looks like the device connected to Port 3 drops first. It would be good to see if the USB 2.0 operation is solid once that is removed.

Regards,
JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

Hi JMMN,

it appears there are no unplug events anymore with the USB3.0 device deactivated. The USB2.0 devices attached to the hub worked properly without connection aborts for over 2 days.

0 JMMN over 6 years ago in reply to David Schmidt98

TI__Guru 60865 points

Hi David,

Ok, we can try to narrow down the issue with the USB 3.0 operation now. Can you turn off U1/U2 using the bit in register 05h? This will disable the USB 3.0 low power states, some device have difficulty with these transitions.

Regards,
JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

Hi JMMN,

I have disabled the U1/U2 via the configuration file and reactivated the USB3.0 device.

I will report back after observing it for a while.

Thank you for your help.

0 David Schmidt98 over 6 years ago in reply to David Schmidt98

Prodigy 135 points

Disabling U1/U2 seems to have resolved the issue! After several days there was no unplug event on the hub.

Thank you!

0 JMMN over 6 years ago in reply to David Schmidt98

TI__Guru 60865 points

Hi David,

Does that work as a solution for your application? It does force the hub and downstream devices to stay in the active state (U0) which will lead to higher power consumption (you can see it in the datasheet), but disabling U1/U2 will not impact the hub's and devices' ability to enter the suspend state (U3).

Regards,

JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

Hi JMMN,

at first it seemed like disabling U1/U2 solved the problem, because after several days there were no unplug events.

But unfortunately after checking today I saw the unplug events still ocurred:

1538.report.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html><head><title>USB Log</title></head>
<body>
 <h3>USB Log</h3>
<br><h4>Created by using <a href="http://www.nirsoft.net/" target="newwin">USBLogView</a></h4><p><table border="1" cellpadding="5"><tr bgcolor="E0E0E0">
<th>Event Type
<th>Event Time
<th>Device Name
<th>Description
<th>Device Type
<th>Drive Letter
<th>Serial Number
<th>Vendor ID
<th>Product ID
<th>Vendor Name
<th>Product Name
<th>Firmware Revision
<th>USB Class
<th>USB SubClass
<th>USB Protocol
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0004<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0004<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0007<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0007<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0008<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0008<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:05<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0007<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:06<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:06<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:06<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:06<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:06<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:06<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0008<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0008<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0009<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Unplug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:09<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0008<td bgcolor=#FFFFFF nowrap>USB Composite Device<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>000000000001<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>0000.0014.0000.001.003.000.000.000.000<td bgcolor=#FFFFFF nowrap>FTDI FT601 USB 3.0 Bridge Device<td bgcolor=#FFFFFF nowrap>Vendor Specific<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0403<td bgcolor=#FFFFFF nowrap>601f<td bgcolor=#FFFFFF nowrap>Future Technology Devices International, Ltd<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.00<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff<td bgcolor=#FFFFFF nowrap>ff
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0008<td bgcolor=#FFFFFF nowrap>Generic USB Hub<td bgcolor=#FFFFFF nowrap>Unknown<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>MSFT2000EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>0804<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0006.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>60EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1100<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0007.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB Input Device<td bgcolor=#FFFFFF nowrap>HID (Human Interface Device)<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>70EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1200<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>03<td bgcolor=#FFFFFF nowrap>00<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0001.Hub_#0009<td bgcolor=#FFFFFF nowrap>Exar USB Ethernet Device<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>10EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1300<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>06<td bgcolor=#FFFFFF nowrap>00
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0002.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch A<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM5<td bgcolor=#FFFFFF nowrap>20EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1400<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0003.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch B<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM3<td bgcolor=#FFFFFF nowrap>30EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1401<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0004.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch C<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM6<td bgcolor=#FFFFFF nowrap>40EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1402<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
<tr><td bgcolor=#FFFFFF nowrap>Plug<td bgcolor=#FFFFFF nowrap>21.11.2017 18:43:10<td bgcolor=#FFFFFF nowrap>Port_#0005.Hub_#0009<td bgcolor=#FFFFFF nowrap>USB UART Ch D<td bgcolor=#FFFFFF nowrap>Communication<td bgcolor=#FFFFFF nowrap>COM4<td bgcolor=#FFFFFF nowrap>50EFE3A0<td bgcolor=#FFFFFF nowrap>04e2<td bgcolor=#FFFFFF nowrap>1403<td bgcolor=#FFFFFF nowrap>Exar Corp.<td bgcolor=#FFFFFF nowrap>&nbsp;<td bgcolor=#FFFFFF nowrap>0.04<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>02<td bgcolor=#FFFFFF nowrap>01
</table>

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So I am not sure anymore if the USB3.0 device causes the issue because the error appears so sporadically. Maybe it was just coincidence that the error did not occur for several days when I disabled the USB3.0 device. And I don't know any way to force the error except to plug the hub in and wait until it appears.

0 JMMN over 6 years ago in reply to David Schmidt98

TI__Guru 60865 points

HI David,

Have you tried rerunning this test with U1/U2 disabled to see if the results correlate? Which host controller driver are you using? I can try to duplicate the issue in our lab.

Regards,
JMMN

0 David Schmidt98 over 6 years ago in reply to JMMN

Prodigy 135 points

Hi JMMN,

yes I rerun the tests with U1/U2 disabled. There still occur unplug events. They are very rare, but every of couple of days they occur.

And I the unplug event did also occur with the USB3.0 device disabled after some days, so it is not the cause of the problem.

I use the standard driver that are installed automatically by Windows 10 when the hub is connected.

Interface

Interface forum

TUSB8041-Q1: Hub loses connection