APC Back-UPS, 390 Watts / 650 VA, Input 120V / Output 120V , Interface Port USB Battery failure notification Provides early-warning fault analysis on batteries enabling timely preventive maintenance LED Indicators Provide easy-to-read status of the unit and utility power conditions. Resettable circuit breaker Easy recovery from overloads; no need to replace a fuse. Battery-protected and surge-only outlets Reserves power capacity and run time for connected equipment that require battery back-up while providing surge only protection for less critical equipment Cold-start capable Provides temporary battery power when the utility power is out. Hot-swappable batteries Ensures clean, uninterrupted power to protected equipment while batteries are being replaced Disconnected battery notification Warns when a battery is not available to provide backup power. Dataline Surge Protection Provides protection of connected equipment from power surges on the data lines. Automatic self-test Periodic battery self-test ensures early detection of a battery that needs to be replaced. Audible alarms Provides notification of changing utility power and UPS conditions User-replaceable batteries Increases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR) USB connectivity Provides management of the UPS via a USB port (not available on all models). Transformer-block spaced outlets Protect equipment with input transformer blocks without blocking access to other receptacles. Intelligent battery management Maximizes battery performance, life, and reliability through intelligent, precision charging. Safety-agency approved Ensures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environment. Lifetime data recovery warranty Provides peace of mind by providing professional data recovery services in the event data is lost due to the failure of the unit. Battery replacement without tools Allows quick, easy battery replacement. Back-UPS Features & Benefits Protection Lightning and Surge Protection Protection from surges, spikes and even lightning is guaranteed! Resettable circuit breaker Instead of a hard to find fuse, there is a push-button circuit breaker for easy recovery from an overload or short circuit. Convenience Audible alarms Proactively notifies you of changing UPS and utility power conditions. Automatic self-test Periodic battery self-test ensures early detection of a battery that needs to be replaced. Transformer Block Spacing Designed to allow the use of up to two transformer block plugs without blocking access to other receptacles.