Mac Pro front USB 2.5 Volts - Need to Find out voltage for MLB Side 593-0382 Cable

[Electrobumps]

Front USB is down on my mac pro 1.1 I can not get them to see anything.

USB is reading 2.5v. If I disconnect MLB Side 593-0382 cable. I get zero volts.

The usb connector close by to the front panel board does not provide any voltage is this correct?

I have presumed USB power is provided from cable 593-0382

Does anyone know what voltages should be seen on this 8 pin cable?

Assuming pin one is top left when you look at it I get the following voltages.

1 - 12v
2 - 5v
3 - 3.3v
4 - 0.12v
5 - 0v
6 - 3.3v
7 - 3.2v
8 - 3.2v

Can anyone verify these voltages are correct? I have just placed a second hand front panel board in and I want to verify if I have another faulty board or if I have a problem elsewhere. FW, 400 and 800 function as expected.

Any ideas to find the fault would be appreciated.

 

[Electrobumps]

Front USB is down on my mac pro 1.1. I can not get them to see anything.


1 - 12v
2 - 5v
3 - 3.3v
4 - 0.12v
5 - 0v
6 - 3.3v
7 - 3.2v
8 - 3.2v

I switched my old board back in and I get 5v. So I have been sold a faulty board.

So I believe these voltages are correct if it helps anyone in the future.