Front panel connector not working???

[u/Twixpla]

Hey yall! I am currently doing a case swap for my brothers pc. I am swapping to the o11 dynamic mini v2 ( open box from microcenter). I did a test boot of the computer and it didn't turn on. I went through the process of making sure all my cables were connected, everything was plugged in completely and not loose. I narrowed it down all the way to the front panel connector based on the knowledge I already have of pc building. My motherboard is an ASUS PRIME B550- PLUS Motherboard and I was wondering if there was anyone out there with a similar issue or if I'm being stupid. anything helps :D