Rongta RP326US ECO-Friendly Receipt Printer, USB (cable incl.) Serial Interfaces, Auto Cutter, POS Printer with 80mm Thermal Paper Rolls - 250mm/sec High-speed Printing (Black) 250mm/s high printing speed Easy paper loading design,eay to use With auto cutter,paper out detection USB,Serial interface optional(Support two in one or three in one) NOT COMPATIBLE WITH SQUARE OR CLOVER;Printer dimension: 191 x 140 x 143 mm(LxWxH)