ASUS B550-F WiFi motherboard guide
ASUS B550-F WiFi motherboard guide
You've just installed a new computer and noticed a red light on the motherboard near the label EATX12V_2. It might mean a connection issue or that something isn't properly seated.
Your power supply must include an 8-pin connector cable labeled EPS or CPU. Connect it to the appropriate slot, as this is essential for proper operation. If you haven’t connected it, review additional PC building guides—this step is crucial. The red light indicates you should insert something into that empty port.