Review on 🔌 Premium 12-Pin Male to 2x8-Pin PCIe Female Power Adapter for NVIDIA Ampere GEFORCE 16AWG RXT 3070 3080 3090 Black - Individual Sleeved PC Cable by Rushabh Gonsales

Just tried this 12 pin header with an RTX 3090 FE. My computer shut down right after starting COD. I couldn't start the computer again until I returned the original 12-pin split connector. I checked all the connections and everything looked fine. It's either the cable specification or the EVGA 1000W power supply pin connections.