The TLP310USBS Protect It!® 3-Outlet Surge Protector features three NEMA 5-15R outlets and a surge suppression rating of 510 joules to protect your components against surges, spikes and EMI/RFI line noise that can damage sensitive electronics and destroy data. Plus, two USB ports produce 3.1A of combined power to charge your mobile devices, such as smartphones, tablets and MP3 players.Recommended for home, office, workstations and dorm rooms, the TLP310USBS includes two sets of brackets and hardware for permanent mounting in, on or under your desk or workstation. The 10-foot power cord is long enough to reach distant AC outlets. Tripp Lite will repair or replace any connected equipment damaged by surges, including direct lightning strikes, up to $20,000 for life (valid in the U.S., Canada and Puerto Rico only).