What does "PD" mean in PoE / Power over Ethernet context?
PD means Powered device. This refers to a device which is powered by a PoE port - in other words, it consumes Power over Ethernet as opposed to a PSE (power sourcing equipment) that injects power that can be consumed by powered devices.
Also see: What does “PSE” mean in PoE / Power over Ethernet context?
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