Thermal Printer Printing Method Thermal Transfer Printer Type Desktop USB Host No Memory 4MB Flash memory 8MB SDRAM SD Card Reader Yes LCD No Parallel Yes Wifi No Mfi (iOS) No Bluetooth No Ethernet Yes RS-232 (Serial) Yes USB 2.0 Yes Max. Print Length 40" Resolution 300 dpi Max Print Width 106 mm (4.17") Max Print Speed 127 mm/ 5 IPS