Before downloading drivers, identify which chip your cable uses. This determines which driver you need for your computer to recognize the device. Higher quality, more stable connection.
Successful setup requires both the diagnostic software and the correct USB-to-serial drivers for your KKL cable. kkl 409.1 software download
If VCDS-Lite is too basic or your car is non-VAG, consider these alternatives (all KKL 409.1 compatible): Before downloading drivers, identify which chip your cable