showstack / glossary / poe
PoE (Power over Ethernet) 乙太網路供電
Powering a device over the same Cat cable that carries its data. Graded by type: Type 1 up to 15.4 W at the switch, Type 2 up to 30 W, Type 3 up to 60 W and Type 4 up to 90 W.
中文
透過傳輸資料的同一條網路線為設備供電。依類型分級：Type 1 交換器端最高 15.4 W、Type 2 最高 30 W、Type 3 最高 60 W、Type 4 最高 90 W。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | PoE / PoE+ / PoE++ | |
| HK / TW | PoE / 網路供電 |
Easy to get wrong
"PoE++", "UPoE" and "Hi-PoE" are vendor names, not ratings. The standard words are Type 1 to Type 4, and a Type 4 device on a Type 2 port simply will not boot.
Next to this
Where it shows up on the wire
Sources
- IEEE 802.3bt four-pair PoE — IEEE primary
Understand the mechanism
Something wrong, or missing?
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