https://forums.tomshardware.com/threads/do-i-need-to-plug-in-a-molex-cable-to-the-pcie-pwr1.1933622/
Do I need to plug in a molex cable to the PCIe-PWR1? | Tom's Hardware Forum
There is a connector on my motherboard that is labeled in the manual as PCIe-PWR1. When I built my computer about a month ago I didn't plug anything into it...