Look for Amazon/AliExpress listings that say “CH340 chip” and “Windows 10 64-bit compatible.” Avoid “Prolific” entirely. If possible, spend $25 on a known-good cable from a diagnostic seller (e.g., Gendan, OBDeleven’s old KKL).
🛠️ The Core Issue: Why Legacy Cables Fail on Windows 10 64-Bit VAG KKL 409.1 interface cable Go to product viewer dialog for this item. vag kkl 409.1 driver windows 10 64 bit