[elganador]

Has anybody ever modified a Powermac G3 front panel board cable to connect to a Powermac G4 motherboard? I came into a Powermac G3 case and also came across a G4 AGP Graphics motherboard. The motherboard fits just fine and largely goes in pretty much 1:1 with the G3 board's connections (so far, excluding the CD Audio cable connector that was on the G3 motherboard).

What's left is a 20 pin plug with a ribbon cable attached and a 3 pin plug that connect to the G3's front panel board. The connector on the G4 only has 10 pins and doesn't have any other connectors available. I would like to reuse the G3's front panel board and as such would like to hear about a success story, or at least a set of pinouts for the G3 front panel board and the G4's front panel board motherboard connector so I can finish up this swap out.

Alternately, if anybody has a G4 Powermac AGP Graphics front panel board with cable that they'd like to sell for a reasonable price, I'd be interested in that as well.

Thanks for your time.

[Crimson]

Could you post some images of the FPB? I could do some visual comparison

[reader50]

Even the service manuals do not list the pinouts - the only connector detailed in the motherboard powersupply connector. I can get all my //GS pinouts from the hardware reference manual, but Apple doesn't seem to offer anything comparable for modern hardware.

[elganador]

Originally Posted by Crimson 

Could you post some images of the FPB? I could do some visual comparison

Sure - here's a FPB from the G3:


Here's a FPB from the G4 (AGP Graphics - they changed during the PowerMac G4 run):

[Crimson]

Ok, the G3's FPB is much more complicated than the one from G4. (Which mainly has 3 switches, dual colored LED and lid open/closed switch) I'd dare say they're not compatible. Here's a helpful link though:
http://www.outofspec.com/frankenmac/wire.shtml