Tripp Lite MT-6PLUS Isobar 6-Outlet Under-Monitor Surge Protector w/ 2 USB Ports Incorporates premium Isobar protection circuitry, the world's Number 1 selling premium suppressor series with a safety tested history of 20 yearsRobust surge suppression with sine-wave tracking protects against the heaviest of surge conditions, exceeding IEEE category A and B specificationsIncludes 6 NEMA 5 15R output receptacles, 4 of which are individually controllable via front panel mounted switches, plus one completely unswitched and one controlled by the master switchSingle phone line surge suppression protects modems, fax machines and cordless phones (2 wire, single line, RJ11 jacks)8 LED indicators confirm suppressor operation and site wiring status, plus warning of suppressor or electrical fault conditions and low voltage conditions