Nintendo Gameboy Gamecube ALL IN ONE LINK TRANSFER CABLE

I THINK this is a transfer or linking cable for various incarnations of the Gameboy. One end looks like it will hook up to a Gamecube too. It says "All in One Cable" on it. Please check photos CAREFULLY.

Shipping should be between $2.95 and $4.95 if you are in the continental USA (Oct. 2012).