What Are the Main Differences Between PoE, PoE+, and PoE++?

Feature PoE (802.3af) PoE+ (802.3at) PoE++ (802.3bt) (Type 4)
Power Output Up to 15.4W per port Up to 30W per port Up to 100W per port
Cable Pairs Used Uses 2 pairs of Ethernet cables Uses 2 pairs of Ethernet cables Uses all 4 pairs of Ethernet cables
Typical Devices Supported Basic IP cameras, VoIP phones, and sensors Advanced IP cameras, video phones, and wireless access points High-power devices like video conferencing systems, LED lighting, and laptops
Cost Low cost, ideal for budget-friendly setups Moderate cost, suitable for medium-power needs Higher cost, designed for high-power and future-proof applications

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