The majority of all surge-induced damage is caused by surges and spikes traveling along unprotected data lines. These surges originate from a wide variety of sources, including static charge buildup and lightning strikes. Left unprotected, your data lines expose network cards, A/V components, modems and other network equipment to damaging electrical transients. The ProtectNet family of stand-alone surge suppressors protects individual data lines, including telephone and network lines, coax cables, and more. Connecting a ProtectNet surge suppressor to your data line prevents back-door surges from ruining your productivity and costing you money.