This CyberPower SE450G1 uninterruptible power supply system provides surge protection for lightning-induced surges and other power events that could damage electronic equipment, and can protect electronics such as Computers, Gaming Consoles, and Broadband Routers. This device has two UBS charging ports, with 2.4 amp shared total output for a quicker charging time. The sleek design minimizes noise and runs efficiently to reduced power consumption. Battery Back Up By supplying power long enough during shut downs when utility power fails, this device helps prevent loss of data and minimizes the stress caused by a hard shut down. Surge Protection Excess voltage gets diverted away from electronic equipment during a power surge or spike to prevent damage. Line Interactive Topology Line interactive UPS has an autotransformer to regulate voltages with out having to switch to battery. Simulated Sine Wave Output Pulse Wave modification generates as stepped, approximated sine wave to supply the cost-effective battery back up power for equipment that does not require sine wave output. USB Charge Ports Gives you the ability to charge and power USB devices such as tablets, smartphones, mp3 players, etc. Energy Star This model is an Energy Star qualified Uninterruptible Power Supply (UPS) system.