Direct Thermal and Thermal Transfer, Standard Serial, USB, and Ethernet, Print Speed: 6”/152mm per second, Print Method: Direct and Thermal, Resolution: 203 dpi / 8 dots per mm, 300 dpi / 12 dots per mm, Max Print Width: 4.10” (104mm), Printer Memory: 32MB RAM / 8MB Flash, Ribbon Type: Wax, Wax-Resin, Special Resin, Ribbon Width (Min/Max): 1.57” (40mm) / 4.33” (110mm), Max Ribbon Length: 450m, Serial RS232: Standard, USB 2.0: Standard, Ethernet 10/100BaseT: Standard, Dimensions: 11”W x 10” H x 17” D, (286mm x 259mm x 434mm).