D-Link 24-Port 10/100Mbps PoE Web Smart Switch with 4-Port 10/100/1000Base-T and 2-Port Combo SFP DES-1228P - AC Power

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AC Power
The Switch utilizes an AC power supply 100~240V AC, 50~60Hz.
The power switch is located at the rear of the unit adjacent to the AC
power connector and the system fan.
The switch’s power supply will adjust to the local power source
automatically and may be turned on without having any or all LAN
segment cables connected.