Epson Thermal Receipt Printer (TM-T20IIS) - Dot density: 203 DPI x 203 DPI, Print method: Thermal line printing, Print Speed: 200 mm/sec, Paper Types: Receipt, Data Buffer: 4 kB or 45 Bytes, Interfaces: RS-232, Wired Network, USB 2.0 Type B, Drawer kick-out, Interface connectors: D.K.D. function (2 drivers), Reliability: 60,000,000 MCBF (Lines), 360,000 MTBF (Hours)