3rd Party PSU for Precision Tower 3620

Question

Does anyone have experience with installing a 3rd party PSU on these machines? I have a video card that requires a more powerful PSU than the stock 365w PSU that is in it right now. I bought an adapter but i get orange flashing lights on the power button. I did not wait long enough to see the code given by the flashing lights as i was worried i would fry the motherboard or components. Then I tried the "ESP 8 Pin/ATX 4pin" cable that came with the new PSU the PC would not power on at all. I circled the ESP 8 Pin/ATX 4pin part of the new PSU in the picture below. Any help is much appreciated.

Here is the adapter I used.

https://www.amazon.com/dp/B08CXR98GH?psc=1&ref=ppx_yo2ov_dt_b_product_details

Here is the PSU I bought

https://www.amazon.com/gp/product/B015VYL88W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Chino de Oro · Accepted Answer

I hope that all the previous wrong connection did not damage your motherboard yet.

First connection, connecting the M/B 24 pin cable from new PSU to the female 24 pin adapter. Then connecting the 8 pin end of the adapter to the motherboard 8 pin socket with marking ATX_SYS.

Second connection, using the cable from your latest post and connecting "ESP 8pin/ATX 4pin" to connector on PSU. The other end of cable has 4 + 4 pin with marking connects to motherboard should be connected to 4 pin socket next to the CPU to provide power to the processor. Test each 4pin and you will see that only one will fit into that socket. Note that the locking clip on 4pin connector should line up with locking groove on CPU 4pin socket.

Chino de Oro · Answer

Re: Then I tried the 'ESP 8 Pin/ATX 4pin' cable that came with the new PSU the PC would not power on at all Maybe because you didn't connect 'ESP 8 Pin/ATX 4pin' to motherboard at first, that would caused the amber light. That was the concerning as 4 pin ATX was supposed to connect to 4 pin on motherboard to power the CPU. You would only need 4 pin part out of 8 pin cable and it was keyed to match the 4 pin socket. Review this video for visual proper connection

snd3eezie · Answer

Thanks for the replySorry im a bit of a noob with the different PSU connectors. I may have explained myself wrong.The first setup i tried was exactly like the tutorial in the video. i used the adapter and connected the extra 4 prong to the CPU. That is when i got the amber lights.The second setup i i tried was with a cable that came with the PSU designated for the 'ESP 8 Pin/ATX 4pin' port on the PSU. The strange thing about this cable is it is split into two 4 pin. they both fit together in the 8pin port on the motherboard so i tried it that. I included a picture of this cable and how i connected it.&#xa0; this setup had no power at all.But after reading your post i realized that the cable that comes with the PSU does not come with a separate 4 pin for the CPU so im guessing that why it got no power at all with that setup.I wonder if i need to use the cable that came with the PSU and an additional 4pin cable that goes from the PSU to the CPU by it self. Just a guess but maybe that is what the separate port labeled 'Sense 4pin' on the new PSU that's next to all the other motherboard power related ports are. the thing is there is no cable like this that came with the new PSU.&#xa0;

snd3eezie · Answer

Success! That solved my issue thanks!

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3rd Party PSU for Precision Tower 3620

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