I tried an alternate internal SCSI cable, to no avail. I will look at caps on the board to see if there is any problem. I know it isn't the ID on the drive, since I have taken out the internal drives and they work as external ones.
More diagnosis as it goes.
I've got a Q840, and it appears to be quite functional. It has one problem. Its internal SCSI connector doesn't work quite right. Any drives I connect there aren't recognized. Normally this would be a problem, but the external SCSI connector works just fine, and when I removed an internal...