Specification :

USB connector plugs into most modern laptops! ( USB 1.1 or 2.0)
Compatible with the latest cars which require a direct CAN connection for diagnostics including all Golf-5 platform cars and latest Audi A3, A6 and A8.
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.
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 Vbatt.
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!
Fully backwards compatible with older cars using a single K-line or K plus L.

Q: What is CAN and why is it important?
A: CAN stands for Controller Area Network. CAN is a new means of communicating with the can for diagnostics used by the latest generations of VW, Audi, SEAT, and Skoda vehicles. Unlike the older ISO9141 system which a used a single K-line for diagnostic communications, the new CAN-Bus system uses a twisted pair of wires with differential signaling. CAN is considerably faster than ISO-9141 ( 500 kpbs vs. 10.4 kbps) . Both new hardware and new software are required in order to communicate with cars using CAN for diagnostics.
Q: What Cars Use CAN for Diagnostics? ( Click on the links of info on each vehicle)

All Golf-5 platform cars ( A5 platform) including:
2004+ VW Golf ( 1K chassis)
2003+ VW Touran ( 1T chassis)
2004+ VW Caddy ( 2K chassis)
2004+ Audi A3 ( 8P chassis)
2004+ Seat Altea ( 5P chassis)
2004+ Skoda Octavia ( 1Z chassis)
2005+ Seat Toledo ( 5P chassis)
2003+ Audi A8 and A8L ( D3 platform, 4E chassis)
2005+ Audi A6 ( C6 platform, 4F chassis)
2005+ Audi A4 ( " B7" platform) ( some control modules)

Q: Does VAG-COM work with cars that require direct CAN access for diagnostics?
A: Yes! We have integrated CAN compatibility since the Release 404.0 version of VAG-COM, but as CAN uses different hardware, new interfaces are required in order to communicate with a CAN-based car. These are now available as well. The new HEX-COM+ CAN and HEX-USB+ CAN interfaces are fully compatible with the new latest cars which require a direct CAN connection.
Q: Do the CAN-Bus Interfaces also work with older vehicles that use the k-line
A: Yes! The HEX-COM+ CAN and HEX-USB+ CAN are fully backwards compatible with older vehicles that use either single or dual K-lines as well, so they work with all VW/ Audi/ SEAT/ Skoda from 1996-2005.