The connector is a simple 6 pin header with .1″ (2.54mm) spacing. It should be connected to the board as follows:
Now, here’s the correct way to connect the 3 power connectors. This corresponds to the the following pinout table for this connector:
Your connection should look like follows. Note the position and the order of the yellow (+12V) and the blue (-5V) wires.
Please ensure the plugs are connected in the proper order or damage to you board may occur.