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Networking Fundamentals · Intermediate

PoE Plus Plus (PoE++)

IEEE 802.3bt, delivering up to 60 W (Type 3) or 90 W (Type 4) at the source using all four pairs.

Definition

802.3bt supports high-power devices such as LED lighting, video displays, high-end access points and thin clients. Some vendors marketed similar pre-standard technologies as UPOE. Higher power increases heat in cable bundles, which affects cable category and bundle size choices.

Example

A Wi-Fi 7 AP with multiple radios draws 45 W from an 802.3bt Type 3 port.

Exam tip

802.3bt is the only standard using all four pairs for power; Type 4 delivers about 71 W to the device.

Related terms