12 surge protected standard US power outlets with 4320 Joules of protection. Built-in EMI/RFI Filter. 2-in-1 power / circuit breaker switch. UL/cUL Rated. Sleek black design with sliding safety covers protect users from accidental contact and keeps dust and debris away from unused outlets. Four corner outlets have extra-wide spacing for large 'wall wart' power adapter bricks. We love our Plugable products, and hope you will too. All of our products are backed with a 1 year limited parts and labor warranty as well as Seattle-based email support.