These pictures show:
The populated Arcade Extender (actually its just me placing the unsoldered bits ontop of the PCB to see the fit)
The Digilent Spartan-3 Starter Kit with a Xilinx Spartan-3 200K circuit
The Starter Kit and an Arcade Extender fitted together.
A bunch of unpopulated Arcade Extender Cards. This show the way they are delivered.