The CyberPower Surge Protector P406U prevents spikes in energy caused by storms and electrical power surges from reaching your home electronics such as audio/video equipment, laptops and desk top computers, household appliances and small electronics. The P406U provides 500 joules of surge protection, 4 Ac outlets, two Usb-a charging ports, and a braided 6 foot power cord with a right-angle plug.Features of the P406U include automatic shutdown, an Emi/Rfi noise filter, metal oxide varistor (Mov) technology, an On/Off switch with integrated 15-Amp circuit breaker, Led indicator, low profile plug, keyhole mounting slots, and damage-resistant construction.FeaturesSurge ProtectionDiverts excess voltage from sensitive electronic equipment during an Ac power surge or power spike to prevent damage.usb Charging PortsCharge Usb-a compatible devices such as tablets, smartphones, and other mobile accessories.