The CJD 500 is a video game console that appears in Grand Theft Auto: San Andreas. It can be found in the Johnson House (where it can be used to play They Crawled from Uranus) and in some of the other houses during the Burglar side missions.
It look similar to the Sega Saturn, though the Saturn was released in 1995 in North America, three years after the events of Grand Theft Auto: San Andreas. It also has indents on the sides, similar to the Xbox, or possibly the Super Nintendo Entertainment System. The name is a play on CJD, a disease that is usually associated with mad cow disease. The buttons of the CJD feature the letters C, J, M and D (possibly referring to Carl Johnson and Madd Dogg) in different colors, much like the buttons of the Playstation consoles, since GTA San Andreas was released as a Playstation 2 exclusive for some time.