HP LaserJet 4250dtn Printer with Extra 500-Sheet Tray and Auto Duplexing (Q5403A#ABA) Up to 45 ppm print speed; up to 1,200 dpi resolution 460 MHz processor, 64 MB memory, expandable to 512 MB 3 paper trays, 1,100-sheet standard input capacity; automatic two-sided printing HP Jetdirect Fast Ethernet embedded print server USB and parallel connectivity; PC and Mac compatible