Power over Ethernet (POE) pinout and wiring @ pinouts.ru

Power over Ethernet is a technology that allows IP telephones, wireless LAN Access Points, Security network cameras and other IP-based terminals to receive power, in parallel to data, over the existing CAT-5 Ethernet infrastructure without the need to make any modifications in it. Described by IEEE 802.3af standard.

PoE integrates data and power on the same wires, it keeps the structured cabling safe and does not interfere with concurrent network operation. PoE delivers 48v of DC power over unshielded twisted-pair wiring for terminals consuming less than 13 watts of power.

IEEE 802.3af standard POE pinout:

Pin	Alternative A	Alternative B
1	Vport Positive
2	Vport Positive
3	Vport Negative
4		Vport Positive
5		Vport Positive
6	Vport Negative
7		Vport Negative
8		Vport Negative

POE pinouts from different manufacturers

| 24 V DC | RX | RX | TX | spare | spare | TX | DC+ | DC- | 3Com AirConnect

STANDARD	SOURCE									LOAD		REMARKS
		Ethernet RJ-45 connector pin number
	Source Voltage	1	2	3	4	5	6	7	8	Load Voltage	DC Load Connector
IEEE 802.3af using data pairs	48 V DC, protected	RX, DC+	RX, DC+	TX, DC-	spare	spare	TX, DC-	spare	spare	(embedded)		Industry Standard for embedded PoE
IEEE 802.3af using spare pairs	48 V DC, protected	RX	RX	TX	DC+	DC+	TX	DC-	DC-	(embedded)		Industry Standard for embedded PoE
Intel, Symbol, Orinoco	Usually 12 or 24 V DC	RX	RX	TX	DC+	DC+	TX	DC-	DC-	(embedded)		Most Brands of PoE
Cisco (OLD old standard)	48 V DC	RX	RX	TX	DC-	DC-	TX	DC+	DC+	(embedded)		Older Cisco polarity is REVERSED
Cisco (NEW old standard)	48 V DC	RX	RX	TX	DC+	DC+	TX	DC-	DC-	(embedded)		New Cisco is IEEE compliant
D-Link (Adapter)	48 V DC	RX	RX	TX	DC+	DC+	TX	DC-	DC-	5VDC@2.5A or 12VDC@1A	DC coaxial 5.5/2.5mm	D-Link PoE Adapter for non-PoE products.
Apple MacIntosh AirPort PoE, Extreme	48 V DC	RX	RX	TX	DC??	DC??	TX	DC??	DC??	Converted to ???	DC coaxial (???)	Mac Polarity Unknown
HyperLink	Many DC Voltages Available	RX	RX	TX	DC+	DC+	TX	DC-	DC-	same as input	DC coaxial and others available	Variety of Options Available to Fit Most Brands of PoE
NYC Wireless "Roll Your Own"	12 or 24 or 48 V DC	RX	RX	TX	DC+	DC+	TX	DC-	DC-	same as input	DC coaxial or as reqd	New York City Wireless PoE
3Com AirConnect	24 V DC	RX	RX	TX	spare	spare	TX	DC+	DC-			3Com AirConnect wireless access points

PoE - powered devices should obey following specifications:

Parameter	Min	Max
Signature Resistance, KOhm	23.75	26.25
Startup Time (till I>10mA), ms		300
Power Consumption, W		12.95
Operating Input Voltage Range, V	36	57
Must Turn on Voltage, V	44
Must Turn off Voltage, V	30 V
Input Current (@36Vdc), mA	10	350
Input Current, Peak, mA		400

Pinouts.ru > Network hardware interfaces pinouts listing > Pinout of Power over Ethernet (POE) and layout of 8 pin RJ45 (8P8C) female connector and 8 pin RJ45 (8P8C) male connector	Is it correct?:	should be correct
Source(s) of this and additional information: "All You Need To Know About Power over Ethernet (PoE) and the IEEE 802.3af Standard" , altair.org Contributor: , etinkerer1	3 reports
Last updated 2009-02-21 22:58:35. Edit this page.	Is this document correct or incorrect? What is your opinion?

Power over Ethernet (POE) pinout

network connector