The EZRED MS4000 OBDII Automotive Presets Computer Memory Saver is a 12-volt memory saver designed specifically for passenger vehicles. Manufactured by E-Z Red in China, this portable device is compatible with OBDII interfaces, making it a convenient and essential tool for automotive diagnostics and maintenance. Its compact size and easy-to-use functionality make it a valuable addition to any vehicle owner's toolkit, ensuring that sensitive computer memory is preserved during diagnostic procedures.