Media Sensors:Movable black mark sensor, limited range from center to left side. Fixed off-center gap sensor Resolution:203 dpi/8 dots per mm Memory:128 MB Flash; 128 MB SDRAM Interface:USB connectivity Maximum Print Speed:6 in./152 mm per second (203 dpi), 4 in./102 mm per second (300 dpi) Maximum Print Width:4.09 in./104 mm