Tripp Lite's TLP404 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. TLP404 offers 4 total outlets, 4 foot cord and diagnostic LED to warn of suppressor damage. AC suppression rated at 450 joules shields equipment from surges and line noise. Attractive light gray suppressor housing with keyhole mounting tabs and 1 designated transformer plug outlet offers convenient protection of desktop computer equipment and accessories.