Oh, sorry, yes it works. Except there's a 500 GB OpenBSD partition on there I want to get stuff out of, so I'm not sure I've hooked it to a Pi since I haven't gotten UFS (file system) to work, even though I built the kernel module for it. Actually yes I did, I had it plugged through a USB 2 hub, using gparted to delete partitions I don't care about anymore to free space. I've also had it hooked to an i386 laptop with OpenBSD to recover files. And I don't know about the UAS https://en.wikipedia.org/wiki/USB_Attached_SCSI
I was just trying to get it to work at all. I also have a Rock64 which has USB 3, and a USB 3 hub for it.
The alarming thing about this StarTech case is that the drive runs hot, at least if it's a 7200 RPM. Leaving the cover off the case or mounting a fan in the cover is probably the answer. The case isn't tall enough to fit even a 40 mm fan in there, it just has a few ventilation holes on one end.
OpenBSD was also giving me some ioctl error when I tried to make a new partition and a couple other things, but gparted doesn't speak UFS at all, there was no disklabel, I didn't take it too seriously. The disklabel I saw was from the disk before I deleted the extra partitions. I had consolidated a few partitions into a bigger one but short of building my own disklabel from scratch and having all the numbers perfect I couldn't access it from OpenBSD. I copied stuff off, but onto a 1 TB drive in the laptop that was already low on space.