It is a xbox controler for the pc for the gamers out there.
Step 1: Be Prepared
Befor you do this you need:
A 2.0 USB port
Xbox 1 contorler or 360
500mhz computer with 64mb of ram
Also If you are using the XBOX 1 controler you need to download XBCD from www.allenthinks.com in the download section.