Why two star deduction, the power switch is unfortunately a button without locking function.
Say, I have a master-slave socket in use in which all devices incl. Hub when you turn my computer to be powered. The EasyAcc but you have to always turn on in addition as this has an electronic circuit for switching on and no Mechnanischen switch.
This problem has one but not if you so no master slave sockets has bar.
Loading my HTC One works without problems.