usb connector plugs into most modern laptops! (usb 1.1 or 2.0) 1. compatible with the latest cars which requires a direct can connection for diagnostics including all golf-5 platform cars and latest audi a3, a6 and a8. 2. protocol timing indistinguishable from a real vag/vas tool. works reliably even with "difficult" control modules such as the 1991-1994 1z audi tdis and the 1993-1994 audi 2.6l with hella ecu. 3. built-in vag-saver functionality -- instantly alerts the user if either the k/k1 line or the l/k2 line is shorted to ground or battery. 4. full support for dual-k lines found in "new" (b6/8e chassis audi a4 and 2002+ audi a6 -- no vas-6017 required -- no manual switches! 5. fully backwards compatible with older cars using a single k-line or k plus l 6. vag-com work with cars that require direct can access for diagnostics. 7. can-bus interfaces also work with older vehicles that use the k-line.