The SK34USBB Protect It! Personal Charging Station charges your sensitive electronics and protects them against surges, power fluctuations and EMI/RFI line noise that can damage devices and destroy data. Ideal for home, office, workstations, dorm rooms and hotel rooms, the SK34USBB features 540 joules of surge protection. Because of its small size and direct plug-in design, you can take it anywhere.With three NEMA 5-15R AC outlets and four USB ports with 4.8 total amps, the SK34USBB can charge multiple power-hungry devices, such as tablets, MP3 players and smartphones. A built-in top slot and an additional slide-out slot hold your devices to keep them safe and organized and avoid cable clutter. A diagnostic LED confirms protection status at a glance. An automatic shutoff feature cuts power to the outlets if the protection circuit has been compromised. Backed by $10,000 of Ultimate Lifetime Insurance in the U.S., Canada and Puerto Rico only.