Mystery cords on new case.

My brother is trying to build his first rig. We've pretty much gotten everything together but there is one problem.

He bought this case "Corsair Special Edition White Graphite Series 600T Steel / Plastic ATX Mid Tower" (I can't post a link for the life of me tonight. But search for that on Newegg)

The issue is there are 4 identical cords coming from the front area of the case and I don't have any idea what they are for. They are black, a little larger then the fan connectors andeach have 3 holes side by side in a row and two of the holes have a pin inside while the left most hole does not.

They are not cords for the fans, audio, usb or any of the power/led connectors etc.

Sorry I can't post a picture at the moment.

Any ideas? :(

(x4) USB 2.0, (x1) USB 3.0, (x1) IEEE1394, (x1) Headphone, (x1) MIC - Those are on the front of the case, any of those not connected?

(x2) 200mm Fans w/White LEDs - There are also 2 fans at the front with LED's, if the cables look the same, I would guess these 2.