20 June 2013 8:00 pm BSTUpdated: 20 June 2013 2:26 pm BST
Photo by: Andrew Hoyle/ CNET
/ Caption by: Jason Jenkins
Conversation powered by Livefyre
How well do you know your surge protector?
Whether you're looking to add more outlets, or want to add a layer of protection between your gear and the outside world, here's what you need to know.