Problems with USB SCSI Mass Storage Device

Everytime my Seagate Expansion Portable Drive is plugged into my PC (Windows 10 64bit), Window's Event Viewer repeatedly reports warning messages:





Event 129, UASPStor

Reset to device,\Device\Raidport1, was issued




Also, USB 3 write speed was extremely slow - it often took more then 8min to write a 5GB file into the drive. During the writing process, the writing speed cycled between 0MB/s to 90MB/s. Most of the time, the writing speed stayed at very low values, < 1MB/s.

Device Manager reported that I have the latest UASPStor driver. If I disabled the UASPStor driver, the drive became disconnected.

If I plugged in the Seagate drive into a Win 7 machine, it worked perfectly well.

Can anyone help me to solve the problem?

When that drive is connected, locate it in Device Manager and search for an updated driver.

I had to give up on one of my external USB3 drives. It worked on Windows 7, and still works on OSX. From the research I did the reason is that up until Windows 7 Intel made the UAS drivers. In 10 they are made by MS and don't work quite the same.so some drives just don't work - it doesn't seem to be one specific manufacturer - see

Can anyone use USB attached SCSI in 10? - Windows 10 Forums
External Hard drive not accessible... - Windows 10 Forums

I tried forcing the Windows 7 Intel drivers to install (you need to update the inf files as described here) but it still didn't work (although it did on Windows 8.1).

The only solution I could find was to use a different enclosure. I guess a SATA --> USB 3 cable would also work.

[QUOTE=Steve C;803255]When that drive is connected, locate it in Device Manager and search for an updated driver.[/QUOTE

Thanks Steve. I tried your method, but problem persists.