Power over Ethernet (PoE) Connector
Pinout
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
1
2
3
4
5
6
7
8
Alternative A Alternative B
Vport Positive
Vport Positive
Vport Negative
Vport Positive
Vport Positive
Vport Negative
Vport Negative
Vport Negative
POE pinouts from different manufacturers
SOURCE
LOAD
REMAR
KS
Ethernet RJ-45 connector pin number
STANDA
DC
RD
Source
Load
Load
Voltag 1 2 3 4
5
6 7
8
Voltage Connect
e
or
IEEE
802.3af
using data
pairs
48 V
DC,
protect
ed
IEEE
802.3af
using
spare pairs
48 V
DC,
DC DC
RX RX TX
TX DC- DC- (embedded)
protect
+
+
ed
Intel,
Symbol,
Orinoco
Usually
12 or
DC DC
RX RX TX
TX DC- DC- (embedded)
24 V
+
+
DC
Cisco
48 V
(OLD old
DC
standard)
Cisco
48 V
(NEW old
DC
standard)
D-Link
48 V
(Adapter) DC
Apple
MacIntosh
48 V
AirPort
DC
PoE,
Extreme
RX
,
DC
+
RX
,
DC
+
TX
, spar spar
D e
e
C-
TX
, spar spar
(embedded)
D e
e
C-
12 or
24 or
48 V
DC
Most
Brands of
PoE
Older
Cisco
DC DC
RX RX TX DC- DC- TX
(embedded)
polarity is
+
+
REVERS
ED
New
DC DC
Cisco is
RX RX TX
TX DC- DC- (embedded)
+
+
IEEE
compliant
D-Link
DC
PoE
DC DC
DC DC 5VDC coaxial Adapter
RX RX TX
TX
?? ??
?? ?? @ 2.5A 5.5/2.5 for nonmm
PoE
products.
RX RX TX
Convert DC
Mac
DC DC
DC DC
TX
ed
coaxial Polarity
?? ??
?? ??
to ??? (???)
Unknown
Variety of
Options
Available
to Fit
Most
Brands of
PoE
DC
New
DC DC
same as coaxial York City
RX RX TX
TX DC- DC+
+
input
or as
Wireless
reqd
PoE
Many
DC
Voltag
DC DC
same as
HyperLink
RX RX TX
TX DC- DCes
+
+
input
Availa
ble
NYC
Wireless
"Roll Your
Own"
Industry
Standard
for
embedded
PoE
Industry
Standard
for
embedded
PoE
DC
coaxial
and
others
availabl
e