[SOLVED] Psu-motherboard pin compatibility

[themourqsreks]

Good evening everyone!
I just got my atx 850W power supply, that has an 20/24 pin exit, but my motherboard, a Fujitsu D3222-A12 model, has an 18 pin exit.
Any possible solutions or adaptor recommendations? Thanks

 

[artisan.9]

I looked up the manual for your MB and it has a 24 pin main power connector, your power supply should work.
https://www.manualslib.com/manual/606720/Fujitsu-D3220.html?page=5#manual

 

[themourqsreks]

You are actually right! Although the 24 pin is "missing". There are just some silver dots on the surface of the motherboard... What does that mean?

 

[artisan.9]

If the connector only has 18 pins on the motherboard then you may be missing needed connections. You don't say what pins are missing but here is a diagram of the voltages associated with the wire colors. https://www.lifewire.com/atx-24-pin-12v-power-supply-pinout-2624578 Look at the power connector of the power supply as it would plug into the MB connector to see what pins are missing. My advice is to return the MB and get one with all the 24 pins to be safe. If it can't be returned or replaced then make sure there are connections for all the voltages and the gray wire power on pin, and purple wire standby. Pin 20 is not used.