Powerlogix Dual 1GHz G4 question

[quadra700]

Hi everyone, I have this dual 1GHz 7457 upgrade card and I'm trying to figure out how to use it. Specifically, it has a pigtail that I believe is for 12v input but am not positive about that and dont want to ruin the card. I am not 100% sure its a powerlogix card but very confident its the Powerlogix Powerforce G4 '57.

I've looked at some install manuals from Powerlogix but none mention this cable. I believe its for 12v input because the other end *looked* like it was connected to the 12v line of a molex connector but it was haphazard, like someone crammed it in there. I cant find the other connector at the moment though.

I posted this question on R a couple weeks ago but no one really knew beyond suggesting a fan connector. I'm hoping for actual knowledge though, not assumptions because as I mentioned before, I dont want to damage the card.

My goal for this is to retrofit it into one of my Cube's. Its a project I started years ago but now that I have the high power VRM I want to get back to it. I also recently got copper shims to adapt the stock Cube heatsink to this card.

 

[quadra700]

I was looking at a for sale listing by @herd and noticed in one of his pics he has a very similar card, highlighted in my attached picture. Only one wire soldered in on his but otherwise almost exactly the same.
Herd, surely you know what this is for?

 

[herd]

That looks like a powerlogix "series 100" card, for the 100MHz bus computers: AGP or GE towers (and it will fit the Cube). The wire is an additional 5v input; you can confirm with a multi-meter. The AGP/GE/Cube sockets can't supply an extreme amount of power, so the wire is to supplement it. Later towers had more power available thru the socket, and the quicksilver also added separate 12v power.

Note that the 7457 requires a firmware patch to defeat the apple anti-upgrade stuff in there.