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TUSB8044AEVM: Port 1 is not working accurate

Part Number: TUSB8044AEVM
Other Parts Discussed in Thread: TUSB8044A, , TUSB9261

Hi Team,

one of our customer is evaluating our TUSB8044A. Now they had a issue with the related EVM TUSB8044AEVM.

On all 4 ports they are connected Demo boards TUSB9261.

The ports 2,3 and 4 detected the SATA device and the port 1 not.

The port1 don’t work as USB3.0 only USB 2.0 devices are detected.

Do you have any idea to fix this issue?

Thanks and best Regards


  • Hi Martin,

    This sounds like an assembly or ESD damage issue.

    Did Port 1 ever work at USB 3.0 speeds?  Can they check the hub and connector for any solder issues?



  • Hello JMMN,

    Martin have create this Task for my demoboard.

    I have recive a second board and the all Ports wors with USB 3.0 Speed.

    I will send the defekt board back to the Distributor, but I need a   confirmation from you side for the reture.

    I can't see on defekt board a bad soldering issues or demages.



  • Hi IIiya,

    Yes, let me know what kind of confirmation you need from me.  The ports should have been verified after assembly.