Which ports does a PSU need to be able to power a Prodesk 600 G1 SFF?

[Fishbed]

I want to upgrade this old computer to be able to run a modern graphics card that consumes 750 watts of power. To do this, I need to replace my PSU. I've seen other questions about PSU replacements but they had no useful info because the question ended at "You can't fit a new PSU in the case."

For me this isn't a problem. My graphics card sticks out of the case already on an extender. I will find a similar solution for an oversized and overbeefed PSU. 

But, to add such a PSU to my setup, I need to know what ports it requires. I haven't bought a replacement PSU yet and I still need this info (which I can't find anywhere else online and am too inexperienced to simply look at and find out what the ports mean) before I can pick one. 

Thank you for your time.

[NonSequitur777 · Accepted solution]

@Fishbed,

Welcome to our HP User Forum!

Best solution, at least in my opinion, is to get rid of the stock HP power supply and using an ATX power supply by means of a 24-pin to 6-pin ATX power adapter cable compatible with your HP ProDesk 600 G1, such as this one: https://www.amazon.com/COMeap-Power-Adapter-Workstation-12-inch/dp/B06XW7RWNH/ref=sr_1_6?crid=3DW80X....

I used this power method very successfully to upgrade several legacy HP desktops, such as this HP Pro 6300 SFF: https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Upgrading-HP-Compaq-Pro-6300-SF....

Hope this was helpful.

Kind Regards,

NonSequitur777