Yeah, I already bumped up the memory (it's so cheap nowadays) and added PostScript (which does slow everything down a bit).

I considered adding a network, but I thought I'd look at USB for openers, because it'd probably be cheaper and easier.

I think you're right on the form factor problem -- couldn'find anything on the HP website, either, but they usually only have the latest stuff, and this is an "ancient" printer. It sure does pump out good looking documents fast, though.