To setup ALFA VFD-822 B, you will need the drivers included in the cd, as well as another one, which can be downloaded from here

Setup process:

1. Installation of PL2303_Prolific_DriverInstaller_v1160
2. Installation of DisplayLink USB Graphics Software for Windows 7.9 M7
3. Installation of ALFA VFD-822 B Utility
4. In the window that opens, select your language and click the corresponding button: