2-7
Installing the Switch
Installation Procedure
Note The HP 1820 24- and 48-port switches do not have a power switch. They are 
powered on when the power cord is connected to the switch and to a power 
source. For safety, the power outlet should be located near the switch 
installation.
The switches automatically adjusts to any voltage between 100-127 or 200-240 
volts and either 50 or 60 Hz. There are no voltage range settings required.
Connect the power cord to the  switch 
and an AC power outlet
HP 1820-8G Switch
HP 1820 24- and 48-Port Switches
Connect wall plug-in AC/DC power adapter 
to the switch and an AC power outlet
HP 1820-8G-PoE+ Switch
Connect inline AC/DC power adapter to the 
switch and an AC power outlet