The ECS H61H2-MV is a micro-ATX motherboard based on the Intel H61 chipset. The front panel connection on this motherboard allows you to connect the power button, reset button, and LED indicators from the computer case to the motherboard.

Connect the "P_LED" cable. Polarity matters ; the positive wire must go to Pin 2. Additional Front Panel Headers

If you're still unsure about the front panel connection, I recommend:

The ECS H61H2-MV is an LGA 1155 socket motherboard based on the Intel H61 chipset. Like most standard ATX and Micro-ATX motherboards, it utilizes a specific block of pins known as the "Front Panel Header" (often labeled or simply F_PANEL ) to interface with the computer case.