Device Port Devices Manufacturer Quatech Incorporated Model No. QSU-100 QSU100G4592 990-0037-01G Interface/port(s) USB Type B -usb 1.1 RS-232 (DB9) RS-232 (DB9) RS-232 (DB9) RS-232 (DB9) Operating System(s) Windows 7 64bit Windows 7 32bit Windows Vista x64 Windows Vista x86 Windows XP x64 Edition Windows XP 32bit Quatech QSU-100 Drivers go up to Windows 7 x64 & x86 but may work on newer OS. HWID(s) USB\VID_061D&PID_C060