Pin on the motherboard connection point
Pin on the motherboard connection point
I had a prebuilt PC back then, and I secured a good price. I was eager to assemble my own system, but now I’m considering moving it into a different case with a new power supply (Seasonic 750W FOCUS GX-75). The original PSU is 180W, while my motherboard uses a 20+4 connector, which is standard today. I wondered if switching to a 24-pin to 4-pin adapter would be feasible or if I’d need a new board. My goal was to save some money and possibly upgrade the CPU, maybe an AMD one. I found some images online about the motherboard, but I’m not sure which one matches what I have. I might need to open the case to verify before proceeding.
It's a HP Pavilion Gaming Desktop PC model 690-0025no. Previously equipped with an i3-8100 and GTX 1050, I've upgraded it to an i5-9400f and GTX 1650 with 16GB RAM. After opening the case, I didn't locate a 24-pin motherboard connector. I took some photos—this one is dusty—and only found two connectors. One appears to be for CPU power; another under the GPU seems like a 4-pin connector.
There are adapter cables that convert ATX power supplies to work with those motherboards. You have that 4 pin connector that powers the CPU which is probably the regular 4 pin CPU. You have that other 4 pin connector which is probably similar or identical to a connector that powers the CPU. You have that black rectangular connector which contains other wires that are normally present in the 24 pin atx connector. Then you have the connector right under that black connector which may be the cable from the power supply fan - basically allowing the motherboard to control the power supply fan speed, and potentially other purpose as well. Again... search ebay and other sites for adapter cables Example of such adapter cable : NO GUARANTEE IT WORKS WITH YOUR MOTHERBOARD, FIND ONE COMPATIBLE WITH YOUR MODEL Link : https://www.ebay.com/itm/174216539249 The above adapter has a tiny circuit board in the middle of the cable which boosts 5v stand-by present in the 24pin atx connector to 12v, because those HP motherboards have 12v stand-by instead of 5v stand-by. Your motherboard may have different connectors, different pinouts. AGAIN, THIS CABLE I LINK ABOVE MAY NOT BE COMPATIBLE WITH YOUR MOTHERBOARD. Don't blame me if you buy it and you damage the motherboard/cpu.
So the situation isn't going to change. The board is non-standard, and the cooler is attached to the case in that setup. The PSU is also non-standard; regular ATX units won't fit because this model only supports 12V with adapter cables not yet available. Essentially, it's locked into this configuration right now.
I also realized that. I placed an order for a fresh motherboard right away, and I believe I'll tackle the GPU upgrade later. For now, I think the i5-9400f works well for most tasks.