Surge Protectors do not always work, lost a computer and all my data. Had to spend a lot of money to get information back....you need to back up....Newer ones are better than older ones, however they are far from perfect....I would unplug and feel better every time....and buy a back-up drive and back up my computer....or subscribe to an off site servce for data....believe me when those pictures are gone...they are gone !!!!