The CyberPower P300WURC2 Surge Protector Wall Tap with USB Ports is ideal for home offices. It prevents spikes in energy caused by storms and electrical power surges from reaching your office equipment such as laptops, small electronics and chargers. The P300WURC2 surge suppressor provides 600 Joules of protection and 3 AC 3-prong outlets designed for standard plugs-all contained in single wall tap. 2 USB ports (2.1 amps, shared) charge USB-powered devices, including tablets. This surge suppressor comes with a limited lifetime warranty and a $50,000 Connected Equpment Warranty.