Quatech QSU-100 USB Four Port RS-232 Serial Driver

A Quatech QSU-100 USB Four Port RS-232 Serial Adapter.
Device
Manufacturer
Model No.
QSU-100
QSU100G4592
990-0037-01G

Quatech QSU-100 Drivers go up to Windows 7 x64 & x86 but may work on newer OS.