Showing results for 
Search instead for 
Did you mean: 
New member
1 0 0 0
Message 1 of 2
Flag Post

HP Prodesk 400 SFF G4 Power Supply - What PSU upgrade options do I have?

HP Recommended
HP Prodesk 400 SFF G4
Microsoft Windows 10 in S Mode

I would like to upgrade the 180W standard PSU in my HP Prodesk 400 SFF G4 so I can install a GPU. What options do I have? Thanks in advance.

Level 11
4,167 4,152 377 865
Message 2 of 2
Flag Post
HP Recommended

your HP 400 sff G4 uses the newest weirdware spec in pc power'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)


this has advantages in that the supply is cheaper, and most likely more reliable due to lower parts count, it's also more efficient


only thing you might be able to do at this time is to see if a 3rd party 12v power supply can be made to fit inside your current power supply case or if the replacement supply is enclosed,  will it fit in the space the original used


note that not all 12v supplies can be used in your PC the power regulation/ripple must match or exceed the current specs this is why those 12v led power adapters will not work, and will damage your system


you need something like this:

0 Kudos
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation