Mounts directly over any existing wall outlet to give you six additional AC outlets. Two powered USB ports provide convenient one-source charging for mobile devices, including smartphones & tablets. Features oversized metal oxide varisotors (MOVs) to absorb excess electricity. Damage-resistant housing protects circuits from fire, impact, & rust while also preventing dents & scratches. “Protected” indicator light turns green to let you know your equipment is secure. Number of Outlets: 6 AC; 2 USB; Joules Of Surge Protection: 900 J; Protection Type: Laptop; Computer; Connected Equipment Guarantee / Warranty: $25,000 Limited.