On Sun, Dec 10, 2006 at 10:04:14PM +0100, Martin Husemann wrote:
> On Sun, Dec 10, 2006 at 01:40:30PM -0600, khym@azeotrope.org wrote:
> > Does only one of them actually work?
> 
> There is only one external connector (the "GeoPort" one, but a standard
> mini-DIN8 cable did work fine). I wondered if the second port could be found
> somewhere on the mainboard (not sure I would find a use for it, just curious).

Hmm, my Centris 660av has both ports, and as far as I know, the
Quadra 660av is identical (although I think the Gestalt code
in the ROM did change, so software can distinguish between the
two). I took a (slightly blurry) picture of the back of my C660av:
http://www.azeotrope.org/~khym/pics/c660av.jpg 

The 3 unused ports at the bottom are printer (non-GeoPort serial), modem
(GeoPort), and S-Video out.