What is the difference between PoE, PoE+, and PoE++?

	PoE	PoE+	PoE++	PoE++
IEEE Standard	IEEE 802.3af	IEEE 802.3at	IEEE 802.3bt	IEEE 802.3bt
Classification	0~3	0~4	0~7	0~8
PoE Type Designation	Type 1	Type 2	Type 3	Type 4
Max Port Power	≤15.4W	≤30W	≤60W	≤90W
Port Voltage Range	44-57V	50-57V	50-57V	52-57V
Supported Cables	Cat3/Cat5 (or better)	Cat5 (or better)	Cat5 (or better)	Cat5 (or better)
Twisted Pairs Used	2-pair	2-pair	2-pair or 4-pair	4-pair
Max Power to Device	12.95W	25.5W	51W	71.3W
Voltage Range to Device	37-57V	42.5-57V	42.5-57V	41.1-57V

Great info bro