Citizen CL-S700. Maximum resolution: 203 DPI. Print technology: Direct thermal / thermal transfer, Print speed: 254 mm/sec. Interface: Parallel, Serial, USB 1.1, Optional connectivity: Parallel, Serial (RS-232), Connectivity technology: Wired. Internal memory: 16 MB, Flash memory: 4 MB. Compatible operating systems: Windows XP/2003/2008/Vista