You lost the cover for that port, didn't you? That connector is delicate and there's power on those pins, and a little metal sliver in there and POW there goes a $90 motor controller.
Fear not, here's a replacement. Print out a handful, 'cause you know in the heat of build you're gonna lose these things.
If printed exactly as designed, it actually snaps in to the port when pressed slightly for a very tight fit.
If your printer is a bit off cal, the SCAD is here so you can tweak the sizes a bit.
Design courtesy FRC Team 1502, Chelsea Michigan. Have fun, see you on the field!