Acer Altos G5350 Series - Manual (Page 40)

2 System setup 30
Turning off the system
There are two ways by which you can turn off the server. These include:
To turn off the server, on the Windows taskbar click on the Start
button, point to Shut Down..., select Shut down from the
drop-down window then click on OK. You can then turn off all
peripherals connected to your server.
If you cannot shut down the server, press the power button for at least
four seconds. Quickly pressing the button may put the server in a
Suspend mode only.