NVRAM

Nonvolatile (sometimes written as "non-volatile") random access memory (NVRAM) is a form of static RAM whose contents are saved when a computer is turned off or loses its external power source. NVRAM can be implemented by providing static RAM with backup battery power or by saving its contents and restoring them from an electrically erasable programmable ROM (EEPROM). Some modems use NVRAM as a place to keep preset or user-specified phone numbers and modem profiles.