One of
these - duplex, mono, networked (but not wifi).
One problem - the network port doesn't work. Well, it does if you hold the network cable in exactly the right position. Which indicates to me that it needs someone with a soldering iron to have a play with it.
But even if you don't have the skills (or friends with skills) to fix the network port it's probably still fine over USB.
(Julie and I have taken the opportunity to upgrade to one of
these, which isn't quite as fast, but does WiFi, cloud printing, and colour.)
Original post on Dreamwidth - there are
comments there.