Intelligent Dual-K plus CAN <-> USB Interface

  • USB connection for compatibility with all modern laptops.
  • Compatible with all diagnostic-capable VW/Audi passenger cars from 1996 to current; K, K+L, dual-K, or CAN.
  • Detachable USB cable. The supplied cable has a proprietary screw locking mechanism, but it can be replaced temporarily with a standard USB-A to USB-B ("printer") cable should it become damaged.
  • Modern 32-bit micro-controller and fully updateable firmware.
  • Tri-Color (red/green/blue) status/activity LEDs with greatly improved visibility from almost any angle.
  • 12 month guarantee against defects in workmanship or materials.
  • Includes an embedded license for VCDS and thus acts as a "dongle" for the software, allowing the software to be used and installed on any compatible PC.
  • Available now, in our store and from many of our distributors.
This interface terminates in an OBD-II type connector that plugs right in to most 1995 and newer VW's and 1996 and newer Audis. It is also compatible with many 1990-1995 Audis and 1990-1994 VW's have the "2x2" data link connector, click here for more info.


HEX-V2 Registration Video HEX-V2 Firmware Update Video


This interface works with all diagnostic-capable VW-Audi Group passenger cars from 1990 through current, except it does NOT fully support the following vehicles:

  • Routan vans -- All years. These are re-badged Chryslers and don't use VW's diagnostic protocols.
  • Lamborghini -- these require a HEX-NET.
  • Some 1991-1994 Audi TDI engines with ECUs that communicate at 240bps.
Computer Requirements:

We recommend at least a 1 GHz dual-core processor with 1 GB of RAM and Windows 7 or newer. Slower computers or Windows 2000, XP, and Vista may work but are not officially supported. Windows 8. 8.1, or 10 on a machine robust enough to support the respective operating system are also fine.

Extending this Interface:

The cable supplied with this interface is about 6 feet long -- just right for most laptops. The USB standards do not allow for passive extension cords! We have tested many Active USB extensions and have found one that works. You can order the 16-ft Active USB Extension from our Store. We do not sell or support any other brands or models of USB extensions, if you have problems when using one, the first thing we're going to tell you is to eliminate the extension. We sell also a 3-ft OBD extension in our web store that lets you keep your diagnostic tool connected and away from the driver's feet and legs.

If you plan to use a desktop PC, a wireless HEX-NET interface may be a better choice.


In most cases, interfaces purchased directly from Ross-Tech will be pre-registered. Interfaces purchased from our authorized resellers must be registered within 10-15 uses to remain functional. Registration is accomplished on-line using a utility supplied with VCDS.


This interface acts as a "dongle" for VCDS, so the software should be fully functional on any PC you use with the HEX-V2. However, product support is provided only to the original registered user. If you buy a second-hand HEX-USB+CAN from someone and want support, you'll still need to pay $99 to re-register the interface in your name..


The HEX-V2 should be used with the latest version of our VCDS software. The HEX-V2 does not have the ability to emulate a dumb serial pass-through interface and thus unlikely to be compatible with any software other than VCDS.

Driver Installation:

The HEX-V2 enumerates as an HID device and does not require a special driver. However, there are some HID power management quirks in 8.1 and newer fixed by installing a device-specific "driver" (actually just an INF file) supplied with the VCDS installer.

How to order:

Available now, in our store and from many of our distributors.

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Unless otherwise noted, all content on this site is Copyright (c) 2000-2021 by Ross-Tech LLC. All rights reserved.
"VCDS", "VCDS-Mobile" and "HEX-NET" are Registered Trademarks of Ross-Tech, LLC.
Ross-Tech is not affiliated with the Volkswagen Group in any way.