The cable was 8.1 automatically detected on my notebook under Windows. A manual driver installation was therefore not necessary, which is why I can not judge the drivers included on the CD. Using the Chirp-contained software programming was not a problem. All settings have been correctly transmitted.
Side note: The original Baofeng software (GT-3_W64) I could also carry out most of the settings. However, I had the language once switch from Chinese to English and some parameters such as the power-text were indeed read correctly, but could not be saved on the device.