Zebra S4M Thermal Midrange Printer, DT/TT, 300dpi, ZPL. Maximum resolution: 300 x 300 DPI. Interface: RS 232, LPT, USB. Internal memory: 8 MB, Flash memory: 4 MB. Weight: 12.4 kg, Dimensions (WxDxH): 272 x 477 x 295 mm. Power requirements: 90-265VAC, 48-62 Hz