This adapter is a plug-in replacement for the 5114, 5514 and 6514 CMOS SRAM chips used in early Williams video arcade games.  It is intended to eliminate the problem of intermittent settings and high score loss or corruption that often occurs when using a switched mode power supply ("switcher") instead of the original linear power supply in games such as Robotron, Sinistar, Joust, Stargate, Bubbles, Blaster and Splat. (Sorry, Defender is not supported).

Item is New. Version 5. Plugged in and tested on our Stargate board.