Z8 G4 GPU power cables not found

[von_b]

I just purchased a new in box Z8 Gen 4, Serial number MXL3211XFV, Product number 7TZ99UC#ABA.  I want to install an nVidia RTX 4070 removed from my Z840 where it worked well.  In the Z8, I find no GPU power cables, nor do I see an empty socket to plug such a cable into.  The Z8 came with an nVidia P620, which I had the seller remove,  Anyone have an answer?  Thanks!

[NonSequitur777]

@von_b,

Welcome to our HP community forum!

According to HP PartSurfer, your HP Z8 G4 Workstation (7TZ99UC) came fitted with a 1125-watt power supply (p/n: L20512-001 / 851384-001) :

According to the specs and YouTube videos, such as this one, your Workstation should be equipped with four 6-pin PCIe power cables (G1, G2, G3, G4), each capable to deliver 12V x 18A = 216-watt.  Since the 6-pin PCIe power cables are rated for 216-watt, you can use 6-pin PCIe (male) to 8-pin PCIe (female) power adapters without any issues.

Kind Regards,

NonSequitur777

[von_b]

Yes, you are correct.  That is exactly the power supply I have with the four 18A G1~G4 outputs.  I can not locate the cables.  There appears to be no empty connections from the edge connector that mates with the power supply.  I have taken the computer apart with the exception of removing the motherboard looking for cables that may be stashed away.  Since this particular model may have come with an nVidia P620 GPU (which requires no external supplemental power), I am wondering if the cables may not have shipped...

Really appreciate the help!!!

[NonSequitur777]

@von_b,

The seller may have removed the power cable assembly for all I know: contact the seller at your earliest convenience and point out this issue.

Kind Regards,

NonSequitur777

[von_b · Accepted solution]

Found the GPU  cables.  They were neatly plugged into receptacles near the drive bays.  Right in front of me...  Problem solved.  Appreciate your help!

- r

[NonSequitur777]

@von_b,

Outstanding!

Happy to hear that the PCIe power cables issue has been resolved.

Kind Regards,

NonSequitur777