Well, it turns out my last comment aged badly: I have just repeated my test procedure (essentially verifying one of my borg archives) in various configurations with the following results: 1. When I connect my external case to my laptop's USB 3.2 Gen 1 port, both usb-storage and uas will not have to reset the device. 2. When I connect my external case to my laptop's Thunderbolt 3 port, which falls back to USB 3.2 Gen 2, there are no device resets when using uas either (and I skipped testing usb-storage). 3. Only when I connect my external case via my USB 3.2 Gen 2 hub from Delock, see my above comment, to my laptop's Thunderbolt 3 port, both usb-storage and uas will trigger the device resets reported above. So I guess this is either a problem with the hub itself or with this particular combination of hub and external case. Unfortunately, I am not sure how I can proceed to help with resolving the observed issues when using the hub there certainly were no messages in /var/log/messages hinting at the hub itself. The only discernible difference is that while the external case does not support USB power delivery (and has to be powered via an AC adapter), the hub does support it. Can this interfere with the packets received by the usb-storage and uas drivers?