Yes, in addition to CUPS supporting JetDirect emulation, and lots of
slightly higher than low end printers now emulate it within themselves
too, IE, have an inbuilt JetDirect for all intents. The underlying
software for printing on Mac OS X is also CUPS.

...and lastly, with the JetDirect peripheral being practically as old
as the original LaserJet II, it's been around in many forms ever
since. You can get one one eBay even for as little as $10 bucks-
shipped, that would do the job.

They're not all that horrid to setup either. Most cases, pimping the
reset button/method and just using it will work just fine.
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