Quick update to the printers post I put up the other day.

After checking it seems that none of the printers have USB connections (nor JetDirect cards) so the only connection possibility really is parallel. That is of course unless you want to buy a USB->Parallel converter, or happen to have an old JetDirect card hanging around.

Please let me know if you are still interested and in which model:

2100
4000
4050
5