**USB connection** Use your PC to access additional power protection & management features for your UPS via a USB (Universal Serial Bus) Port. ** Telephone dataline surge protection** Provides protection of connected equipment from power surges traveling on telephone lines. ** Automatic Voltage Regulation (AVR)** Automatically steps up low voltage & steps down high voltage to levels that are suitable for your equipment. ** Resettable circuit breaker** Easy recovery from overloads; no need to replace a fuse. ** Automatic restart of loads after UPS shutdown** Automatically starts up the connected equipment upon the return of utility power. ** Automatic self-test** Periodic battery self-test ensures early detection of a battery that needs to be replaced.