Yeah, but I meant that it's not a host-based printer like many printers are these days. Having the formatter on the printer means you can print to it directly and not worry about the driver, so long as it's sending PostScript. Many laser printers these days (especially HP) require the use of platform specific host based drivers. The printers are useless on anything that isn't modern.
Annoyingly, the host-based printers often stop working for one reason or another until the drivers are updated to work with whatever OS you're using. Our LaserJet 3600s often stop working right after an OS X point update. We have to wait weeks (sometimes months, as it was for 10.9) for an updated HP driver. As printers arbitrarily labeled "old" by HP and they stop updating the drivers, they're simply useless and you'll have to buy a new printer... which I'm certain is the entire point.
Even though the Xerox printers aren't host based, Xerox has no problems putting out an updated printer drive the same day as an OS update. And even if there was a driver issue, I can always print as Generic Postscript.