FSP Flexguru 300W - custom cable


What's an ITX?
Original poster
New User
Aug 14, 2021
I'm looking for a provider that has custom PSU cable for this power supply. I would like a much shorter main cable (eg the 8 and 24 pin cable). Ideally the cable is also just 8 pin + 4 pin as my mobo an ATX12VO design.

I checked some sites, asked dreamingbigbyray but none seem to offer anything custom for this psu.

Any input?


I do not have the "electrician skills" and tools to do it myself. So that is not really an option.


Shrink Ray Wielder
Jan 20, 2018
8+4-pin sounds like a server board, not 12VO - 12VO has a mandatory 10-pin replacing the 24-pin. And that's a good thing, as ATX PSUs aren't compatible with ATX12VO due to its use of a 12V rather than 5V standby power rail. Does your board come with a 24-to-4-pin adapter?


Airflow Optimizer
May 21, 2018

The Flexguru 300 has a custom pin out that that doesn't include PCI Express or GPU support. The site linked above sells that PSU with custom cables specifically modded to work. As you already have the PSU, maybe you can ask to buy just the cables.

The Flexguru 500 is completely different... I doubt those cables would work.