Everything that is plugged in, uses power as long as the power strpi/surge protector is plugged into the wall and on. The best thing, if you want to leave stuff plugged in, is one of two things. First is to just turn off the power strips, and surge protectors, for extended times, like a week, just unplug the strip. This saves your devices from an unfortunate power surge while you are away. Also Monster came up with special surge protectors which regulate power issue by if the same device is on, like a computer. Also UPS systems also help save electricity, and protect devices better than a surge protector. That is all of the information I have. Cheers -Matt