may include an additional 5-pin header labeled . This is a secondary connector for Dell's proprietary power button harnesses and is usually redundant if you use the 9-pin header.
: If you are moving this motherboard into a non-Dell case, you can use standard 2-pin DuPont connectors for the Power Switch and LEDs. The Power Switch (pins 5 and 6) is the most critical; the PC will boot even if LEDs are not connected. Polarity Matters for LEDs dell mih61r mb front panel pinout
These are the most critical pins. Shorting them will turn the PC on. Standard case "Power SW" connectors can be plugged here; polarity does not matter for the switch. LED Polarity: Unlike the switches, the HDD and Power LEDs may include an additional 5-pin header labeled