Cobb Subaru Reflash Connector

These little initialization jumpers allow you to reflash your 2002-2005 WRX.  There's a blue one and a white one.  Each car needs only one.  Look under the dash to figure out which one you need -- the sockets are different shapes.

Pro hint: You can leave this plugged in all the time.  It doesn't hurt anything, and makes it harder to lose.