Found in higher-quality or "original" 409.1 cables. CH340: Common in budget-friendly "blue" Chinese cables.
To use the VAG KKL 4091 cable, you'll need diagnostic software. Popular options include: how to install vag kkl 4091 on windows 10
In Device Manager, if you see an orange exclamation mark, right-click it, select Update Driver Found in higher-quality or "original" 409