USB 2.0 ports not working

Windows 10

The USB 2.0 ports on my Plugable UD-3900H are not working, but all other ports are working normally.

I tried unplugging power and USB for over a minute, plugging in power, and then plugging in USB after waiting 30 seconds. When inserting a USB device to a USB 2.0 port it recognized that something was connected but then said that the USB device malfunctioned and now all the USB 2.0 ports don’t work again.

Any ideas?

Hello Scott,

Thank you for contacting Plugable support. We would like to take a closer look at your system to better help assist but require some additional information. Instead of posting that information here, could you please contact us directly via email? To do this, please email us at In the subject of your direct email, please reference case 402275 which will allow us to match things up and then provide the next steps.

Apologies for the extra steps in the process, and we thank you for giving us the chance to help!

Best regards,

Michael S.

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