Question 400W Output Switch Power Supply Module for PC DC 12V 24Pin Pico PSU ATX Switch PSU

[saleemsartawi]

Hello,

I'm building an AMD PC, using B550 mini iTX, my build needs 175w, and since I only need 12v, I moved to powering my pc with an external barrel adapter, the one we use for laptops.
this adapter gives 12v 300w output, and working fine, to connect it to my pc I needed a 300W Output Switch Power Supply Module for PC DC 12V 24Pin Pico PSU ATX Switch PSU.
The problem is that when I connect it to the PC it only powers the cpu cooler, with no other signs whatsoever.
I also tried connecting the same PC to a regular 600w power supply, and it worked just fine and I installed windows on it.
My build is pretty small, and no power supply can fit inside the case.
My assumption is that the motherboard is not recognizing the 24pin connector attached to it since it's not a known power supply.
I hope anyone can give me an advice in which I can still use the external power option, I thought it might help if there is any way to introduce the 24 pin driver to the motherboard bios.
thanks.

 

[DAPUNISHER]

Quick question: You plugged the 8pin CPU connector in as well yes?

FYI: If you check out this video you will see there is no issue with using a PICO PSU on mITX B550.

 

[Nayem]

Quick question: You plugged the 8pin CPU connector in as well yes?

FYI: If you check out this video you will see there is no issue with using a PICO PSU on mITX B550.

Hello, same guy different account,
yes I do have my CPU power fastened correctly
I'm using the same AC-DC adapter as the video, but a smaller PSU but it should work fine since it goes up to 240W with a 12V input




Only one account per member.


esquared
Anandtech Forum Director

 

[DAPUNISHER]

If you would link to that PICO product page for members here to examine. I am unfamiliar with it personally.

 

[sdifox]

Don't you still need the pins from a regular psu for power on signal and continuity check pins? How is a barrel adapter power supply supposed to handle that?