Dorothy Hennings said: >Thanks for the really quick response. It is an NTR with 36-pin >Centronics-type port, a 25-pin serial port (RS-232) and a LocalTalk >port (DIN-8, RS-422 compatible). I just copied this stuff from the >manual. Remember when all computers etc came with complete manuals? OS X includes a driver specifically for the Personal LaserWriter NTR: http://www.apple.com/macosx/upgrade/printers.html Your Mac has USB, FireWire and Ethernet ports, but no serial, parallel, or LocalTalk ports. What you need to connect your printer to your Mac is a LocalTalk-to-Ethernet adapter, such as the EtherMac iPrint Adapter LT from Farallon (now Proxim) or the AsanteTalk EtherTalk to LocalTalk adapter from Asante. I have found the Farallon device to be the more reliable of these two. Both are out of production, but you can probably find one on eBay. Randy B. Singer Co-Author of: The Macintosh Bible (4th, 5th and 6th editions) Routine OS X Maintenance and Generic Troubleshooting http://www.macattorney.com/ts.html