When connect to PC:
[  107.982944] g_ncm gadget: high-speed config #1: CDC Ethernet (NCM)

==================================================================================================

When connect to a ID-pin ground cable:
[    7.071070] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    7.077901] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.085157] usb usb1: Product: xHCI Host Controller
[    7.090076] usb usb1: Manufacturer: Linux 3.14.49 xhci-hcd
[    7.095709] usb usb1: SerialNumber: xhci-hcd.1.auto
[    7.101099] hub 1-0:1.0: USB hub found
[    7.104888] hub 1-0:1.0: 1 port detected
[    7.109836] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[    7.115483] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 2
[    7.123325] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003
[    7.130156] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.137440] usb usb2: Product: xHCI Host Controller
[    7.142465] usb usb2: Manufacturer: Linux 3.14.49 xhci-hcd
[    7.148028] usb usb2: SerialNumber: xhci-hcd.1.auto
[    7.153397] hub 2-0:1.0: USB hub found
[    7.157190] hub 2-0:1.0: 1 port detected
[    7.181917] using random self ethernet address
[    7.186384] using random host ethernet address
[    7.192219] usb0: HOST MAC 86:ed:52:6c:77:d5
[    7.196548] usb0: MAC 32:e8:3e:9b:31:0a
[    7.200451] g_ncm gadget: NCM Gadget
[    7.204037] g_ncm gadget: g_ncm ready
[    7.207729] dwc3 48890000.usb: otg: gadget gadget registered
[    7.213436] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[    7.219460] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 3
[    7.228078] xhci-hcd xhci-hcd.0.auto: irq 438, io mem 0x48890000
[    7.234230] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002
[    7.241059] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.248427] usb usb3: Product: xHCI Host Controller
[    7.253323] usb usb3: Manufacturer: Linux 3.14.49 xhci-hcd
[    7.258868] usb usb3: SerialNumber: xhci-hcd.0.auto
[    7.264450] hub 3-0:1.0: USB hub found
[    7.268257] hub 3-0:1.0: 1 port detected
[    7.274253] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[    7.282406] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 4
[    7.290737] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003
[    7.297576] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.304827] usb usb4: Product: xHCI Host Controller
[    7.309800] usb usb4: Manufacturer: Linux 3.14.49 xhci-hcd
[    7.315306] usb usb4: SerialNumber: xhci-hcd.0.auto
[    7.320878] hub 4-0:1.0: USB hub found
[    7.324659] hub 4-0:1.0: 1 port detected
==================================================================================================

Connect a USB mass storage stick to this Hub

[  415.216520] usb 3-1: new high-speed USB device number 2 using xhci-hcd
[  415.367062] usb 3-1: New USB device found, idVendor=0951, idProduct=1613
[  415.373799] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  415.381113] usb 3-1: Product: DT 101 II
[  415.385578] usb 3-1: Manufacturer: Kingston
[  415.389912] usb 3-1: SerialNumber: 5B8514000036
[  415.395248] usb-storage 3-1:1.0: USB Mass Storage device detected
[  415.401811] scsi1 : usb-storage 3-1:1.0
[  416.397741] scsi 1:0:0:0: Direct-Access     Kingston DT 101 II        PMAP PQ: 0 ANSI: 0 CCS
[  416.414255] sd 1:0:0:0: Attached scsi generic sg0 type 0
[  417.843793] sd 1:0:0:0: [sda] 7821312 512-byte logical blocks: (4.00 GB/3.72 GiB)
[  417.851653] sd 1:0:0:0: [sda] Write Protect is off
[  417.856704] sd 1:0:0:0: [sda] No Caching mode page found
[  417.862041] sd 1:0:0:0: [sda] Assuming drive cache: write through
[  417.870392] sd 1:0:0:0: [sda] No Caching mode page found
[  417.875730] sd 1:0:0:0: [sda] Assuming drive cache: write through
[  417.882411]  sda: sda1
[  417.885994] sd 1:0:0:0: [sda] No Caching mode page found
[  417.891498] sd 1:0:0:0: [sda] Assuming drive cache: write through
[  417.897718] sd 1:0:0:0: [sda] Attached SCSI removable disk

==================================================================================================

Connect a USB mouse to this Hub

[ 1426.326505] usb 3-1: new low-speed USB device number 3 using xhci-hcd
[ 1426.470531] usb 3-1: New USB device found, idVendor=04f3, idProduct=0210
[ 1426.477371] usb 3-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ 1426.484540] usb 3-1: Product: PS/2+USB Mouse
[ 1426.489631] usb 3-1: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
[ 1426.506104] input: PS/2+USB Mouse as /devices/44000000.ocp/48880000.omap_dwc3_1/48890000.usb/xhci-hcd.0.auto/usb3/3-1/3-1:1.0/0003:04F3:0210.0001/input/input1
[ 1426.520966] hid-generic 0003:04F3:0210.0001: input: USB HID v1.11 Mouse [PS/2+USB Mouse] on usb-xhci-hcd.0.auto-1/input0