Power over Ethernet (PoE) Connector Pinout - AllPinouts
From AllPinouts
8 pin RJ45 (8P8C) female connector at the hub.
8 pin RJ45 (8P8C) male connector at the cable.
Power over Ethernet (PoE) is a technology, described by IEEE 802.3af standard, 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.
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.
| 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
| 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 | 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 |
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 |
