Power over Ethernet(PoE) Pinout Diagram, Color Code Explained


Power over Ethernet or PoE is a standard system that transmits or delivers electrical power along with data through the same cable. We know that there are different types of network cables are available such as cat6, cat7, cat5, etc, and different types of ports also available such as RJ45. RJ45 has a total of eight pins and it connects with an ethernet cable that consists of eight separate wires. All these eight wires are not used for the data transmission, so some of them can be used for electrical power transmission. As per the standard, the electrical current should interface with the data transmission and the cable should be safe.

The Power over Ethernet system works under the standardization of the (Institute of Electrical and Electronics Engineers)IEEE 802.3 committee. Generally, PoE delivers 47-57V DC power. This PoE system is used for both data and power transmission purposes in Internet Protocol(IP) cameras, Wireless Acess points(WAPs), Voice over Internet Protocol(VoIP), etc.

According to the IEEE standard cat5 or better cable is required for the transmission of high power levels. But cat3 cable also can be used if less power transmission is required. The PoE system was physically implemented under the specification of IEEE 802.3af-2003. Also, we know that there are two categories for the RJ45 colour code - T568A and T568B.


IEEE 802.3af-2003 Standard PoE Pinout Diagram for T568A


Power over Ethernet(PoE) Pinout DiagramT568A, RJ45 PoE Pinout


The T568A has a total of eight pins and color combinations. Here, you can see the details,

Kepp the copper strips towards your face and count the pin number or pin position from the left to right.

  1. White Green - TX+
  2. Green - TX-
  3. White Orange - RX+
  4. Blue - DC+ (PoE)
  5. White Blue - DC+ (PoE)
  6. Orange - RX-
  7. White Brown - DC-(PoE)
  8. Brown - DC-(PoE)


IEEE 802.3af-2003 Standard PoE Pinout Diagram for T568B


Power over Ethernet(PoE) Pinout DiagramT568B, RJ45 PoE Pinout


The 568B also has a total of eight pins and sight different colors. Here, you can see the details,

Kepp the copper strip side towards your face and count the pin positions or pin numbers from the left side to the right side.
  1. White Orange - TX+
  2. Orange - TX-
  3. White Green - RX+
  4. Blue - DC+ (PoE)
  5. White Blue - DC+ (PoE)
  6. Green - Rx-
  7. White Brown - DC- (PoE)
  8. Brown - DC- (PoE)


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Power over Ethernet(PoE) Pinout Diagram, Color Code Explained Power over Ethernet(PoE) Pinout Diagram, Color Code Explained Reviewed by Author on 12/07/2021 Rating: 5
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