How to get a PSU upgrade to my HP Desktop Pro G2

[Shikyol]

I want to upgrade to the 310W psu for this prebuilt, but I cannot find out what it's product key is for the HP part surfer, only the 180W I have. I want that psu so I can update my graphics card

[itsmyname]

@Shikyol -- when I tried: 

   https://partsurfer.hp.com/WSearch.aspx?Wchar=Y&searchText=Z1+G2+Workstation

there were literally hundreds of computers listed in the "Z1 G2 Workstation" group.

Click on the "best" one, to get a list of all the components in that specific choice.

You should get the part-number for the power-supply.;

Hopefully, you will NOT see the "N/A" ("not available") tag.

[Shikyol]

I've found the product no but when I loony it up on part searcher it says, comply_2.06 , don't know where to go after this. 

[NonSequitur777]

Unfortunately, "n/a" is the reality here:

Could not find the "HP 4QV55AV 310W SFF ESTR" online anywhere.

Anyone else out there more successful?

[itsmyname]

@Shikyol -- the image you posted includes:

To circumvent the "N/A" flag, try a Google-search, with that part number, to see if anybody anywhere on the Internet has listed one for sale.

[DGroves]

the HP DESKTOP PRO G2 MICROTOWER PC system might use the same 310 watt power supply in other sub models

https://support.hp.com/rs-en/document/c06510291

https://partsurfer.hp.com/WSearch.aspx?Wchar=Y&searchText=HP+Desktop+Pro+G2