Here is one place to get the needed cable.
http://www.triumphtwinpower.com/ttp-obd-2-usb-cable.php
Can't give an e-bay link to another "known" working cable but they must exist.
I got mine in a kit for tuning my car. Just so happened that it was the same VAG comm cable TuneECU used.

Last edited by MattyMo; 03/07/2015 6:27 PM.
09 America, some modifications