> I mean without using 4 separate power "bricks" using 4 wall outlets which is quite wasteful By using 1 power brick with 1 wall outlet. You just need to fancy

> I mean without using 4 separate power "bricks" using 4 wall outlets which is quite wasteful By using 1 power brick with 1 wall outlet. You just need to fancy a way to split one output to four, probably a bit of soldering.