Windows 10: USB 3.0 Drive is Not Working on USB 2.0 Ports

I have kesu usb 3.0 scsi disk device which is working on USB 3.0 ports on my computer but not in USB 2.0 ports.

:)

 

USB 3.0 transfer speed drops to 0 only on one port. USB port and external drive are NOT defective.

I have a Dell XPS 13 laptop with two USB 3.0 ports. I connect a Seagate expansion drive to the left USB port and transfer a 4GB test file. It transfers about 1GB at 150MB/s and then transfer speed drops to 0. Then it picks up again after 3-4minutes, then
drops again intermittently.

I connect the same Seagate drive to the right USB port. The same 4GB file transfers with a constant speed of approximately 150MB/s. Thus the Seagate drive is not defective. Perhaps the left USB port is defective.

I connect a Sandisk 128GB flash drive to the left USB port (that is now suspected defective). It transfers the same 4GB file with constant 130MB/s speed, no speed drops!

Each step is reproducible 10x.

I am out of my wits here.

 

USB 3 Ports not working

Hi folks,
i was trying to copy some files from an external drive using the usb 3 port on my M/B but it doesnt work, i downloaded the drivers from the Manufacturers website but no luck either, am i missing an important step here? i havent checked the Bios yet
GA-Z170XP-SLI (rev. 1.0) Overview | Motherboard - GIGABYTE Global

 

Not working USB 3.0 Ports on Asus M5A99X EVO R2.0

Also, try what worked in the following link:

[motherboard] USB 3.0 Ports Not Working, USB 2.0 Ports Are - Computer Hardware Help | DSLReports Forums