The HKT-0200 Sega Katana Controller Box is a peripheral device for the Sega Dreamcast Development Box prior to the Set 5.xx. It connected to the older Katana Development Boxes, which lacked controller ports. This device worked best with either the MK-80117 Sega Saturn 3D Controller Pad or the HSS-0137 Sega Saturn 3D White Controller Pad.
http://segakatana.com/hardware.php?cat=dcdev&id=hkt02
