User`s guide

Third-Party Power Controllers
Chapter 14 Power Controller 217
After typing the port menu key:
Type p to power device off or r to reboot device.
The Hot Key by default is Ctrl-Z.
This can be changed by going to Configuration > Serial Ports > {Port #
or All} > Host mode configuration > {set the Port Escape Sequence} >
Save & Apply.
Note: This is also what is displayed when connecting directly to the port
using ssh or telnet without going through the web interface.