PoE standards define power delivery. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation states:
A: IEEE 802.3at (PoE+) delivers up to 25.5 W, true.
B: IEEE 802.3bt (PoE++) delivers up to 71-90 W (not exactly 81.6 W, but close), generally true.
C: IEEE 802.3af (PoE) delivers 12.95 W, true.
[Reference: HCSP-Presales-Campus Network Planning and Design V1.0, Section on PoE Standards., , ]
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