HP OfficeConnect 1820 8G Installation And Getting Started Manual page 17

Connect wall plug-in AC/DC power adapter to the switch and then to an AC power outlet.
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HPE OfficeConnect 1820 8G PoE+ switch
Connect inline AC/DC power adapter to the switch and then to an AC power outlet.
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NOTE:
The 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.
The 1820 8-port switches also do not have a power switch. They are powered on when the external
AC/DC power adapter is connected to the switch and the adapter power cord to a power source. The
external AC/DC power adapter automatically adjusts to any voltage between 100-240 volts and
either 50 or 60 Hz.
2. Check the LEDs on the switch as described below.
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Installing the Switch 17