HP Engage One Serial USB Thermal Printer (3GS19AA) - Resolution: 203 DPI, Printing Speed: 114 mm/sec (33.75 LPS), Print Method: Direct Thermal, Flash Memory: 8 MB, RAM: 8 MB, Receipt-Columns: 44/56, Interface: RS232 (9-Pin Female to 9-Pin Female NULL modem cable) or standard USB 2.0 cable, Color: White