GUARDIAN SURGE - PREM PLS Power surges and spikes can seriously damage your computer, modem and other electronic equipment, causing expensive repairs or replacement and hours of frustrating downtime. Kensington has a full line of surge protectors that safeguard your equipment in the office, at home and on the road, with connected equipment warranties that are unparalleled. It's one important way Kensington puts Smart Design at Work for you. This is the Guardian Premium Plus six-outlet strip with 210 joules of protection plus fax/modem protection.