Wireless KB/MS Head (JP2) on a Shuttle

Having bought a SN64G2v2 a few years back, I only recently came round to reading the mainboard manual (FN41V3). This tells me that I can connect a wireless keyboard/mouse through the board (I currently have a doggle plugged into an external usb socket).

The internal connection is not a usb socket, it's called JP2'Header' and by the looks of the manual consists of two rows of six pins with various 'pin assignments'.

Please could someone tell me what this JP2 header is and if/how I use it to control my existing wirless usb mouse/keyboard as I'd like to free up a usb socket.

Many thanks,
Pete