Tripp Lite's portable TRAVELER3USB Surge Protector offers complete surge suppression for cell phones, MP3 players, smartphones, tablets, laptops, electronic notepads, personal organizers and other portable electronic devices. Compact and portable, the model comes with an 18-inch concealable cord allowing for compact storage in small luggage or briefcases. It neatly fits into laptop travel cases without scratching expensive electronics. With the addition of 2 USB Charging Ports for a total of 2.1A of total charging power, the TRAVELER3USB allows road warriors the ability to charge mobile devices more easily. TRAVELER3USB offers 3 AC outlets with one widely spaced outlet to accommodate a transformer. A diagnostic "Protected" LED warns of wiring problems and surge suppressor damage. For peace of mind, the TRAVELER3USB is backed by a $25,000 Ultimate Lifetime Insurance (U.S., Canada, and Puerto Rico only).PLUG/OUTLETS: Input: NEMA 5-15P/Output: 3 NEMA 5-15RELECTRICAL: 120V AC, 50/60Hz, 15A (Requires NEMA 5-15R wall receptacle)FORMAT: Corded mobile surge with 1 transformer accessSUPPRESSION: AC: 1050 joules