438 cps at 10 cpi Print Speed, 240 x 144 dpi Resolution, Parallel and USB Connectivity, Dot Matrix RoHS Compliant, 12,500 POH at 25% duty cycle., lexmark forms printer 2481 dot matrix printer - - 510 cps mono - 240 x 144 dpi h79747 43212102 42814b 12t0042