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PoE — Power over Ethernet

Delivers electrical power over compatible Ethernet cabling.

Acronym study batch 2 · reviewed 2026-10-20

Why learn PoE — Power over Ethernet?

Delivers electrical power over compatible Ethernet cabling.

Where it came from

Powered-device needs and the switch power budget must both be checked.

• Memory aid (a learning cue, not the expansion): Power rides on Ethernet.

Build your understanding

Work through these exercises in order. Try the task before opening a reference.

1. Without looking, expand PoE: Power over Ethernet.
2. Recall this memory aid: Power rides on Ethernet.
3. Explain the practical use: Delivers electrical power over compatible Ethernet cabling.
4. Explain this distinction: Powered-device needs and the switch power budget must both be checked.
5. Identify PoE in a device specification, architecture diagram, or system inventory.

Documentation and sources

• IEEE 802 LAN/MAN standards (www.ieee802.org)
• IETF Internet standards (www.rfc-editor.org)

Catalog source: technology-maxxing. This page reproduces the existing catalog’s learning material and source links.