Fast and Durable High Speed 1 Original + 3 Copies USB Interface Energy Saving Space SavingRibbon Life : 3 million characters Approximately Technical Specifications: Input Bufffer : 132 KB Interface : USB 2.0, Parallel, Serial RS-232C Noise : < 53 dBA Paper Feed : Continuous Paper/Copy Paper, Sheet, Card, Envelope, Label Print : Normal 50cps to High 337cps Print Head : Diameter of wire 0.3 mm Printing Direction : Uni or bi directional logic seeking Print Method : 9 Dot matrix impact printer Print Width : 80 columns (10 CPI) / 203.2mm Power-Consumption : 3.6W on standby, 47W on operation Resolution : 240x144 dpi Maximum Ribbon Life : 3 million characters Approximately Included Components Printer , Power Cable, Cd & Manual Brand XLAB SKU 100592667_NP-1021018550 Model XDP321