I stumbled across this web-page in searching for more info about the ACM.
A Dension/ACM compatibility table:
http://www.dension.com/jaguar/iPods3c.pdf
and links to upgrade info for the S,X and XJ and also XK models:
Dension - Jaguar
I guess this proves the ACM is the Dension unit (not that there was a huge amount of doubt)
What I'm not sure about, and can't really find conclusive proof regarding, is whether there's any significant difference between the ACM and the Gateway 500 units.
A Dension/ACM compatibility table:
http://www.dension.com/jaguar/iPods3c.pdf
and links to upgrade info for the S,X and XJ and also XK models:
Dension - Jaguar
I guess this proves the ACM is the Dension unit (not that there was a huge amount of doubt)
What I'm not sure about, and can't really find conclusive proof regarding, is whether there's any significant difference between the ACM and the Gateway 500 units.