Yeah I can't imagine it'd be anything else (floppy drives are floppy drives), and probably less of an issue for the Portables than for the PB's. Anyway, a seller on eBay is offering 343S0061-A's for $10 (or make an offer, which I did), so one's on the way. I'll update once it's in.
My apologies for the delay posting this. The site was, indeed, down for a few hours yesterday, from around 5:00 p.m. to 9:30 p.m. (GMT -7/ Arizona time)
The electricity in the region our site is hosted in had been turned off in response to a local wildfire.
As always, thank you for your patience on these kinds of things!