@TomCats65 , welcome to the Community.
Your motherboard (Lubin) has a standard 24-pin ATX power connector. Therefore, you can use any standard ATX power supply unit (PSU) that will fit into the space. Just get the measurements of the one you choose and compare them to the measurements of the space. A fully modular PSU would be good. They allow you to only use the cables that are absolutely necessary to allow for better airflow in the case. This is important when adding more components to the space.
Here is an example of what should work: https://www.newegg.com/corsair-rmx-series-rm550x-cp-9020177-na-550w/p/N82E16817139231?&quicklink=tru...
It measures 3.39" x 5.91" x 6.30".
Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.


I am not an HP Employee!!
Intelligence is God given. Wisdom is the sum of our mistakes!!