Common in budget Chinese clones; usually requires a specific CH340 Driver .
Here is a critical pro-tip: Windows 10 is fickle with port assignments. If you unplug the cable and plug it into a different USB port later, Windows might assign it a new number (e.g., COM4). Your diagnostic software (like VCDS-Lite) is configured to look at a specific port. If you change the USB slot, the software will lose the connection. how to install vag kkl 409.1 on windows 10
Once the driver is installed, the cable will be assigned a COM Port number. Older software often only looks for COM Ports 1 through 4. Common in budget Chinese clones; usually requires a
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