Totally cool obscure system from Capcom that lets you use the CPS B arcade boards on a home TV. Like Capcom's answer to the Neo Geo.
System was only availible through mail order, and is little more than a glorified Supergun. The cartridges are essentially arcade PCB boards. Has Snes controller ports (intended for use with Capcom's arcade fighter stick.)
Only 11 games were converted in gray "cartridges" released specifically for this system. Pretty rare outside of Japan.
Links with better pictures:
Capcom CPS at NFG games
Assembler.com - Capcom CPS