Audi A6 diagnostic port

[scibby]

I have a 1997 audi A6 avant and I am looking for the diagnostic port to plug in the tester to find faults. Can anyone tell me where this is located within the car?

Thanks

[Sam]

It's either here http://www.ross-tech.com/vag-com/cars/dlc.html#audi90

or

here http://www.ross-tech.com/vag-com/cars/dlc.html#96a6