I use a Belkin Data Switch box for running 2 printers on one serial port- not contiguously of course. Never a problem, just switch to the desired printer, and open the chooser and choose the printer. Cost was under $50. Cheers Wardie -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- June special: 10% off all 22" x 17" medias: Concorde Rag, Capri Canvas and more. Free upgrade to UPS 2nd day with all ink and media combination orders! http://www.dygraphics.com or call toll free 888-786-8832.