PoE Switch VS. PoE+ Switch, Which Will You Choose?
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Amazon.com: Yuanley 24 Port PoE Switch with 2 Gigabit Ethernet Uplink Port, Unmanaged 26 Port 802.3af/at 400W Power PoE+ Network Switch, Rackmount Plug and Play : Electronics
How to understand the power consumption of 24-port PoE switch?