Those extra contacts on the second tab are what carry the +25V DC that powers an ADC monitor. Pins 3 and 11 DO carry the USB signal. To the poster that said USB requires 4 pins - Remember that two of the USB pins carry +5V DC, which is available in the native AGP spec. Only two USB pins actually carry data, hence 3 and 11. G4 machines that are capable of running ADC monitors do have an extra socket in front of the AGP slot for that second tab on the card.
Chance On Wed, Mar 16, 2011 at 7:14 AM, faithie999 <[email protected]> wrote: > i have a sawtooth, which i know didn't come with an ADC monitor. > however, i'd like to have an adc-capable card in my parts bin. > i looked at one on ebay but there is an extra tab with a few contact > on it, maybe 1/2 to 1 inch in front of the agp contacts. > i thought apple used contacts 3 and 11 especially for the ADC monitor, > but obviously these "extra" contacts must have some purpose. > > what are they for, and i assume that G4 machines that came with ADC > monitors have an extra socket in front of the agp socket into which > this tab inserts. > > finally, was this design only for the G4, or would this card work in > an AGP G5? > > thanks! > > this ebay listing has a decent picture of the connector i'm curious > about: > > http://cgi.ebay.com/APPLE-G4-NVIDIA-AGP-ADC-VIDEO-CARD-630-3963-POWERMAC-G4-/250773870717?pt=PCC_Video_TV_Cards&hash=item3a6349987d > > -- > You received this message because you are a member of G-Group, a group for > those using G3, G4, and G5 desktop Macs - with a particular focus on Power > Macs. > The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette > guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to [email protected] > For more options, visit this group at http://groups.google.com/group/g3-5-list > -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
