I use, and recommend, a "smart power strip". My PC and various peripherals
are plugged into it ... including a number of power bricks (AC adapters).
When I turn my PC off, the smart power strip turns off all of the other
AC outlets automatically. When the PC is turned on, the smart power strip
turns on all of the other
AC outlets automatically.
Info at:
smarthomeusa.com
and
amazon.com