So apparently I purchased incompatible RAM for a SECOND time. 🤦🏻♂️🤦🏻♂️🤦🏻♂️
After going through the manufacturers extensive list, it turns out that the first mod...
Hmm, I guess it could happen to me, too... Lots of letter btw: https://help.corsair.com/hc/en-us/articles/360051011331-DDR4-memory-module-dimensions