They're the same guts as HP printers and it'd be easier to interface to one of those with a Jetdirect Ethernet card. Anything built before Fiorina tanked the company will be reliable. The later models will also have faster warm up times for the fuser.
Back then companies were still short sighted enough¹ to build them to last.
It's an Apple Laserwiter 12/640PS.
It's still chugging along today, with 64Mb of memory no less!
[1]: Recurring revenue wise that is.