In related news, I have decided simply to transfer my SCSI card from the old box to the new one (which has a single PCI slot).
I checked, and a USB2-to-Wide-SCSI adapter costs more than $300! At least the list price.
For bonus points: Find the error in the Exherbo installation instructions. Maybe it is there to weed out the newbies, but more likely the error is akin to when I try to type ‘ratio’ and instead get ‘ration’, due to my habit of typing the ‘-tion’ ending.