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.