Sewoo SLK-TS100 Receipt Printer: USB+SERIAL+ETHERNET PRINTING SPECIFICATION METHOD : Direct Thermal SPEED : 220mm/sec WIDTH : 72mm(576 Dots/Line) RESOLUTION : 203DIP / 180 DPI DIRECTION : Unidirectional with Friction Feed PAPER SPECIFICATION TYPE: Thermal Receipt Paper WIDTH : 80 mm THICKNESS : 0.06 ~ 0.08 mm ROLL DIAMETER : Max. ? 80.0 mm ROLL CORE INNER DIAMETER : 12.5 mm ? 0.5 m INTERFACE STANDARD : USB(B type)+Serial(RS-232C_9pin)+Ethernet Built-in