CP System II, CPS-2 or Capcom Play System 2 is a motherboard system for recreational machines that debuted in 1993 with the Super Street Fighter II game. The CPS-2 consists of 2 separate parts; The A plate, which connects to the JAMMA harness and contains the common components for all CPS-S games, and the B board, which contains the game as such. The relationship between plates A and B are basically the same as between a home console and game cartridges. CPS-2 system plates A and B are identified by color codes by region, and each board can only be used with one of the same color.
The B-plate has a backup battery memory that contains the decryption codes needed to run the games. Over time, these batteries lose their load and games stop working. This is called by the connoisseurs as "Suicide CPS ".
There are currently emulators for multiple operating systems that emulate this system, for example MAME and its different adaptations.