If you have not found it yet, here is a link to the pdf of the [[url=http://[/URL]="http://akwww.digide…"]192 i/o[/]="http://akwww.digide…"]192 i/o[/] at the digidesign website.

http://akwww.digidesign.com/support/docs/192_IO.pdf

This should tell you all you need to know.

The 192 i/o (I believe) come with 8 analog a/d's and 8 analog d/a's and has one bay open for another card, which can be either an a/d, a d/a or a digital card.

You can connect both the +4dBu and the -10dBV inputs but you can only use one or the other. You can select which inputs to use within Pro Tools in the Hardware Setup dialog. Be mindful that you only get +4dBu outputs on the d/a so if your using -10dBV, Digidesign states that :

For –10 dBV gear, a special DigiSnake cable
(sold separately) is available. If you want to
make your own cable, be sure to use in-line
transformers or resistor networks to properly
pad the +4 dBu output to –10 dBV levels.

Best,