To install the driver you have to disable the driver signature enforcement.
You can use the latest drivers.
In case of the PCGU1000 please follow the instructions in the chapter “1.3 Workaround to use the PCGU1000 on 64-bit Vista or Windows 7” of the Release Notes.pdf.
To start the procedure: “hold down the Shift key while you click the “Restart” option in Windows.”
[quote]I have installed CP210x_VCP_Win2K_XP_S2K3 as standard installation,[/quote]It seems the “Workaround” is done. You just need to install the normal PCGU1000 driver “PCGU1000 USB driver” available here: velleman.eu/support/download … 1000&type=