Tripp Lite's portable TRAVELER100BT surge suppressor offers complete AC and Ethernet or phone line surge suppression for laptops, electronic notepads, personal organizers and other portable electronic devices. Compact portable housing weighing less than 4 ounces neatly fits into laptop travel cases. Retractable plug prevents scratching of expensive portable electronics. Set of RJ45 Ethernet or telephone line suppression jacks protect network lines or dialup and DSL modem lines.