I have 2 server in remote location. They will be power off by end user (power supply or maintainability issue), many end users most frequently makes common mistakes to avoid this confusions, i am trying to know if there is any hardware solution which can solve this kind of problems.

Is there any system solution which can be connected to the Servers power supply and remotely turn on or off. So that end user only switch off slave power not the master power?

Thank you