The Tripp Lite(R) by Eaton(R) Protect It!(R) 4-Outlet Surge Protector Strip offers economical AC surge suppression for protection of workstations, desktop PCs, telecom systems, and other sensitive electronics. Built-in AC surge suppression shields connected equipment from damage and performance problems due to transient surges. The TLP404 offers 4 total outlets, a 4-ft. cord, and diagnostic LED to warn of suppressor damage. AC suppression is rated at 450 Joules and shields equipment from surges and line noise. 1 designated transformer plug outlet offers convenient protection of desktop computer equipment and accessories and there are keyhole supports for wall mounting.