I just tested the USB one and the disks that I got today, and that all seems to work fine - I won't be able to test the SCSI one for a few weeks though, sadly I suspect that may be the one that is dead as it was in such a poor state when I got it
(and of course it seems to be the SCSI ones that are the hardest to find)
(and of course it seems to be the SCSI ones that are the hardest to find)