Update: RAM upgrade successful!

And the HD adapter doesn't work. Empeg won't see any drives. Won't work with a USB-to-44 pin adapter that I have, either. Drive spins up but no HD found in either case. Guess the little "QC control" sticker on the thing doesn't mean anything.

Since it'll be a while before it gets stuffed in a vehicle, I just bought a couple more of the things off Aliexpress.