Power-over-Ethernet (EN)

Architecture

flowchart LR   A[PSE - Power Sourcing Equipment] --> B[PD - Powered Device]   subgraph PSE     C[Power Supply] --> D[Power over Ethernet Controller]     D --> E[Ethernet Ports]   end   subgraph PD     F[Power Management] --> G[Device Components]     H[Data Processing] --> G   end   E --> F   E --> H 

Lifecycle

stateDiagram-v2   [*] --> Detection   Detection --> Classification   Classification --> PowerUp   PowerUp --> Operation   Operation --> PowerDown   PowerDown --> [*]   PowerUp --> Error   Error --> [*] 

In Context

• Typically used together with switches, power injectors, and PoE splitters
• Related to: IEEE 802.3, network infrastructure, IP cameras, VoIP
• Example use: Installation of WLAN access points without separate power supply