Ideal protection for PCs, workstations and small servers. Automatic voltage regulation (AVR) corrects low-voltage conditions (brownouts) back to safe 120V power without draining the UPS battery. Included dataline connectors provide protection for all connections. USB port enables free unattended shutdown software, so your files are saved in the case of a blackout, even when you are not there. Support battery replacement via built-in access panel.