hp prodesk 400 g4 sff psu upgrade

[davidjamespeter]

looking to upgrade my psu to one that can support a zotac 1030 low profile card.

currently using an i7-7700 in my prodesk. 

current psu https://www.365powersupply.com/product/hp-400g4-sff-power-supply-pa-1181-7-906189-001/

[NonSequitur777]

Dear Davidjamespeter, your question was raised before in this forum. DGroves said it as well or better than I would, and I quote: 

"your HP 400 sff G4 uses the newest weirdware spec in pc power supplies.........it's a 12v only supply all other necessary voltages are created/regulated on the motherboard and it's also a custom size (non atx spec)" [emphasis added.]

Link: HP Prodesk 400 SFF G4 Power Supply - What PSU upgrade option... - HP Support Community - 8003657

It so happens that I am facing a similar lack-of-onboard-power challenge to power a higher end GPU with a related desktop (HP EliteDesk 800 G3 SFF).

There are solutions available. Please note: some of which [disclaimer!] are NOT at all recommended by HP and which requires some additional chassis modification, but which do work: one of the least expensive options is utilizing an "ATX PSU ADAPTER ATX 24-Pin to SATA Power Supply Adapter". For informational purposes: Upgrading HP EliteDesk 800 G3 SFF - HP Support Community - 8251218

[EDIT: in your case (pun intended), I believe that your Zotac 1030 low profile card does not have a secondary GPU-card power connection.  If it did (does), then all you would have to do is to create an access opening in your top panel to allow a SATA power cable connection to go out to the ATX Power Adapter and an external industry standard ATX PSU PCIe power connection to go in.  Because your card appears not to have an ATX power (6/8-pin) power connection, I'm afraid that the modification I described in my forum link means that you would have to park your GPU outside your PC chassis.  If that is the "case", and you decide to go that route, you may as well get a much better GPU to take advantage of the very substantial system/CPU capabilities of your PC.  DISCLAIMER: Before you even consider this off-the-reservation option, please wait for HP-approved aka HP-doctrinal feedback.]