Z620 PCI-e six port power connector

[kermitxyz]

Hi all

I have two Z620 workstations and am having issues with a graphics card.  I noticed that the six port power connector (as per the picture) does not have power on pin 1.  From a Google search, it seems it should have 12v on pin 1?   The strange thing is the  graphics card seems to work fine in one PC and not the other, and I noticed this whilst trying to determine the issue.

Is that correct?

Thanks

[DGroves]

the "GPU" aux power connector on the z620 is a six pin connector with 3 wires being ground and 3 wires being +12

your picture is correct, the connector from the power supply  has the ground wires closest to the locking tab

however, Officially the 6 pin connector is only guaranteed to have 2 12V pins. The middle one is officially unconnected

but many power supplies do connect the middle pin to 12v (on a 8 pin connector  this wire is always connective/active)

with the system powered on using a video card that does not use a gpu power check the voltage on the connector

trying to check with the connector attached can be difficult as most people do not have the necessary probes to reach into the connector and make good contact with the metal tip inside the connector

[kermitxyz]

Thanks for your reply.  However, it is pin 1 which does not have 12v on it (there is no metal connector in the multi-plug nor wire to it).  This is on both machines.

 Both machines are given intermittent errors with graphics (six red flashes) and with two cards.  Surely HP didn't ship power supplies which don't actually have the correct connectors for many graphics cards?