This kit allows you to add a Game Boy link port to a Super Game Boy cartridge.
Supply your own link port(Original or Pocket/Color/Advance) by desoldering it from a Game Boy(preferably a broken one) and installing it into the SGB Link.
The purpose of this kit is to be able to sync to another Game Boy to play multiplayer games or to sync your music software with an Arduino Boy or a USB-Boy.
Basic kit = PCB with components, spacers and screws
Full kit = PCB with components, spacer, screws AND a Pocket/Color/Advance link port