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Active Power over Ethernet (PoE) is a technology that allows Ethernet cables to carry electrical power, along with data, to remote devices. Active PoE follows specific IEEE standards (802.3af, 802.3at, and 802.3bt) that ensure safe and efficient power delivery. Here’s a step-by-step explanation of how Active PoE works:

Active Power over Ethernet (PoE) is a technology that allows Ethernet cables to carry electrical power, along with data, to remote devices. Active PoE follows specific IEEE standards (802.3af, 802.3at, and 802.3bt) that ensure safe and efficient power delivery. Here’s a step-by-step explanation of how Active PoE works:

#'''Detection:''' The Power Sourcing Equipment (PSE) sends a small voltage to detect a compatible Powered Device (PD).

'''1.''' '''Detection:''' The Power Sourcing Equipment (PSE) sends a small voltage to detect a compatible Powered Device (PD).

[[File:PoE2.png|border|class=tlt-border|center|700x200px]]

[[File:PoE2.png|border|class=tlt-border|center|700x200px]]

#'''Classification:''' The PSE classifies the PD by sending a higher voltage to determine its power requirements.

'''2.''' '''Classification:''' The PSE classifies the PD by sending a higher voltage to determine its power requirements.

[[File:PoE3.png|border|class=tlt-border|center|700x200px]]

[[File:PoE3.png|border|class=tlt-border|center|700x200px]]

#'''Power-Up:''' The PSE gradually increases the voltage to the required level.

'''3.''' '''Power-Up:''' The PSE gradually increases the voltage to the required level.

[[File:PoE4.png|border|class=tlt-border|center|700x200px]]

[[File:PoE4.png|border|class=tlt-border|center|700x200px]]

#'''Power Delivery:''' Power and data are transmitted simultaneously over the Ethernet cable. The PSE continuously monitors the power supply to ensure safe and #stable operation.

'''4.''' '''Power Delivery:''' Power and data are transmitted simultaneously over the Ethernet cable. The PSE continuously monitors the power supply to ensure safe and #stable operation.

[[File:PoE5.png|border|class=tlt-border|center|700x200px]]

[[File:PoE5.png|border|class=tlt-border|center|700x200px]]