The cables were wrong and didn't match what came with the power supply. More precisely, the power cable of the mainboard. Even the cables weren't enough to speak of a full-fledged replacement. 1 GPU power cable missing for use with 3080ti. Some cables were labeled, some weren't. I had to try to compare with what comes with the power supply.
Sennheiser PC 8 2 Cancelling Microphone
71 Review
Renewed Logitech G PRO X Wireless Lightspeed Gaming Headset with Blue VO!CE Mic Filter for Immersive Gaming Experience
122 Review
Enhance Your Visual Experience with Logitech C260 Webcam
78 Review
π₯ Logitech C270 Webcam: Crystal Clear Video and Superior Quality
183 Review