Serial RS-232 C, USB 2.0 Full Speed (Automatic Interface Switching), Tractor Berat 8 kg Copies 1 original + 6 copies Graphic Resolution 60, 120, 180, 240, 360 horizontal ? 72, 90, 180, 216, 360 vertica Power Consumption 45 W Print head life 24 needles, life > 400 million characters Print Speed 580 cps (VHSD), 520 cps (HSD), 400 cps (Draft), 200 cps (NLQ), 133 cps (LQ), BIM: 2400 dps Print Technology Impact Dot Matrix 24 pin