The CyberPower Standby CP350SLG uninterruptible power supply (UPS) safeguards PCs with non-Active PFC power supplies and other electronics (monitors, cable DSL/ modems, VoIP routers, fax machines, and home theater equipment) from blackouts, brownouts, surges, spikes, sags, and other power abnormalities. Its composite integrated circuitry offers advanced lightning protection. Patented GreenPower UPS advanced circuitry reduces UPS energy costs by up to 75% compared to competitive models. More from the Manufacturer