31/12/06 - Added a diagram for the Wii and corrected the Sega Saturn diagram (left and right audio were swapped around). Also made a few minor changes to the page. 8/8/05 - Added diagrams for Atari Jaguar and Microsoft Xbox. Jaguar info taken from here. 1/7/05 - Added diagram for the Nintendo Gamecube. Added some datasheets. Jun 19, 1989 · This part does not actually plug into any PCI slots of the motherboard, but insteads uses a 24-pin ribbon cable to connect directly to a special connector on certain Dell Optiplex motherboards. The keyboard interface is an elementary low-level device and it needs to be initalized very early during the boot process.