ifs POE304-MS User manual

POE304-MS PoE Injector
User Manual
P/N
1073475-EN • REV C • ISS 06OCT22

Copyright
©
2022 Carrier. All rights reserved. Information subject to change without prior notice.
This document may not be copied in whole or in part or otherwise reproduced without
prior written consent from
Carrier, except where specifically permitted under US and
international copyr
ight law.
Trademarks and patents
IFS
and associated names and logos are a product brand of Aritech, a part of Carrier.
Other trade names used in this document may be trademarks or registered trademarks
of the manufacturers or vendors of the respective products.
Manufacturer
PLACED ON THE MARKET BY:
Carrier Fire & Security Americas Corporation, Inc.
13995 Pasteur Blvd, P
alm Beach Gardens, FL 33418, USA
Authorized EU manufacturing representative:
Carrier Fire & Security B.V.,
Kelvinstraat 7, 6003 DH Weert, Netherlands.
Version
This document applies to
POE304-MS.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must
accept any interference received, including interference that may cause undesired
operation.
FCC compliance
Class A:
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to part 15 of the FCC Rules. Th
ese limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accor
dance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his
own expense.
Canada
This Class A digital apparatus complies with CAN ICES
-003 (A)/NMB-3 (A).
Cet appareil numérique de la classe A est conforme à la norme CAN ICES
-003
(A)/NMB
-3 (A).
ACMA compliance
Notice!
This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
Certification
EU directives
This product and
- if applicable - the supplied accessories too are marked with "CE" and
comply therefore with the applicable harmonized European standards listed under the
EMC Directive 2014/30/EU, the RoHS Directive 2011/65/EU.
2012/19
/EU (WEEE directive):
Products marked with this symbol cannot be disposed of
as unsorted
municipal waste in the European Union. For proper recycling, return this
product to your local supplier upon the purchase of equivalent new equipment, or
dispose of it at designated collection points. For more information see:
www.recyclethis.info.
Produc
t warnings and
disclaimers
THESE PRODUCTS ARE INTENDED FOR SALE TO AND
INSTALLATION BY QUALIFIED PROFESSIONALS.
CARRIER FIRE &
SECURITY
B.V. CANNOT PROVIDE ANY ASSURANCE THAT ANY
PERSON OR ENTITY BUYING ITS PRODUCTS, INCLUDING ANY
“AUTHORIZED DEALER” OR
“AUTHORIZED RESELLER”, IS PROPERLY
TRAINED OR EXPERIENCED TO CORRECTLY INSTALL FIRE AND
SECURITY RELATED PRODUCTS.
For more information on warranty disclaimers and product safety
information, please check
https://firesecurityproducts.com/policy/product-
warning/
or scan the QR code.
Contact information
and
manuals
EMEA: https://firesecurityproducts.com
Australian/New Zealand: https://firesecurityproducts.com.au/

Product documentation
Please consult the following web link to retrieve the electronic version of the product
documentation. The manuals are available in several languages.

POE304-MS PoE Injector User Manual 1
Content
Important information 2
Chapter 1 Introduction 5
Package contents 5
Product description 5
Product features 7
Product specifications 8
Chapter 2 Hardware description 10
Physical dimensions 10
Product rendering 11
LED indicators 11
Chapter 3 Installation 13
Before installation 13
PoE injector installation 13
PoE injector and POE304-EX-4P PoE extender installation 14
Appendix A Networking connection 16

2 POE304-MS PoE Injector User Manual
Important information
Limitation of liability
To the maximum extent permitted by applicable law, in no event will Carrier be liable for
any lost profits or business opportunities, loss of use, business interruption, loss of
data, or any other indirect, special, incidental, or consequential damages under any
theory of liability, whether based in contract, tort, negligence, product liability, or
otherwise. Because some jurisdictions do not allow the exclusion or limitation of liability
for consequential or incidental damages the preceding limitation may not apply to you.
In any event the total liability of Carrier shall not exceed the purchase price of the
product. The foregoing limitation will apply to the maximum extent permitted by
applicable law, regardless of whether Carrier has been advised of the possibility of
such damages and regardless of whether any remedy fails of its essential purpose.
Installation in accordance with this manual, applicable codes, and the instructions of the
authority having jurisdiction is mandatory.
While every precaution has been taken during the preparation of this manual to ensure
the accuracy of its contents, Carrier assumes no responsibility for errors or omissions.
Product warnings
YOU UNDERSTAND THAT A PROPERLY INSTALLED AND MAINTAINED
ALARM/SECURITY SYSTEM MAY ONLY REDUCE THE RISK OF EVENTS SUCH AS
BURGLARY, ROBBERY, FIRE, OR SIMILAR EVENTS WITHOUT WARNING, BUT IT
IS NOT INSURANCE OR A GUARANTEE THAT SUCH EVENTS WILL NOT OCCUR
OR THAT THERE WILL BE NO DEATH, PERSONAL INJURY, AND/OR PROPERTY
DAMAGE AS A RESULT.
THE ABILITY OF CARRIER PRODUCTS, SOFTWARE OR SERVICES TO WORK
PROPERLY DEPENDS ON A NUMBER OF PRODUCTS AND SERVICES MADE
AVAILABLE BY THIRD PARTIES OVER WHICH CARRIER HAS NO CONTROL AND
FOR WHICH CARRIER SHALL NOT BE RESPONSIBLE INCLUDING, BUT NOT
LIMITED TO, INTERNET, CELLULAR AND LANDLINE CONNECTIVITY; MOBILE
DEVICE AND OPERATING SYSTEM COMPATIBILITY; MONITORING SERVICES;
ELECTROMAGNETIC OR OTHER INTERFERENCE, AND PROPER INSTALLATION
AND MAINTENANCE OF AUTHORIZED PRODUCTS (INCLUDING ALARM OR
OTHER CONTROL PANEL AND SENSORS).
ANY PRODUCT, SOFTWARE, SERVICE OR OTHER OFFERING MANUFACTURED,
SOLD OR LICENSED BY CARRIER, MAY BE HACKED, COMPROMISED AND/OR
CIRCUMVENTED AND CARRIER MAKES NO REPRESENTATION, WARRANTY,
COVENANT OR PROMISE THAT ITS PRODUCTS (INCLUDING SECURITY
PRODUCTS), SOFTWARE, SERVICES OR OTHER OFFERINGS WILL NOT BE
HACKED, COMPROMISED AND/OR CIRCUMVENTED.
CARRIER DOES NOT ENCRYPT COMMUNICATIONS BETWEEN ITS ALARM OR
OTHER CONTROL PANELS AND THEIR WIRELESS OUTPUTS/INPUTS INCLUDING

POE304-MS PoE Injector User Manual 3
BUT NOT LIMITED TO, SENSORS OR DETECTORS UNLESS REQUIRED BY
APPLICABLE LAW. AS A RESULT THESE COMMUNICATIONS MAY BE
INTERCEPTED AND COULD BE USED TO CIRCUMVENT YOUR ALARM/SECURITY
SYSTEM.
THE EQUIPMENT SHOULD ONLY BE OPERATED WITH AN APPROVED POWER
ADAPTER WITH INSULATED LIVE PINS.
DO NOT CONNECT TO A RECEPTACLE CONTROLLED BY A SWITCH.
THIS UNIT INCLUDES AN ALARM VERIFICATION FEATURE THAT WILL RESULT
IN A DELAY OF THE SYSTEM ALARM SIGNAL FROM THE INDICATED CIRCUITS.
THE TOTAL DELAY (CONTROL UNIT PLUS SMOKE DETECTORS) SHALL NOT
EXCEED 60 SECONDS. NO OTHER SMOKE DETECTOR SHALL BE CONNECTED
TO THESE CIRCUITS UNLESS APPROVED BY THE LOCAL AUTHORITY HAVING
JURISDICTION.
WARNING! The equipment should only be operated with an approved power adapter
with insulated live pins.
Caution: Risk of explosion if battery is replaced by an incorrect type. Dispose of
batteries according to the instructions. Contact your supplier for replacement batteries.
Warranty disclaimers
CARRIER HEREBY DISCLAIMS ALL WARRANTIES AND REPRESENTATIONS,
WHETHER EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING ANY
IMPLIED WARRANTIES, THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE.
(USA only) SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED
WARRANTIES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. YOU MAY
ALSO HAVE OTHER LEGAL RIGHTS THAT VARY FROM STATE TO STATE.
CARRIER DOES NOT MAKE ANY CLAIMS OR WARRANTIES TO YOU OF ANY
KIND REGARDING ANY PRODUCT, SOFTWARE OR SERVICE’S POTENTIAL,
ABILITY, OR EFFECTIVENESS TO DETECT, MINIMIZE, OR IN ANYWAY PREVENT
DEATH, PERSONAL INJURY, PROPERTY DAMAGE, OR LOSS OF ANY KIND
WHATSOEVER.
CARRIER DOES NOT REPRESENT TO YOU THAT ANY PRODUCT (INCLUDING
SECURITY PRODUCTS), SOFTWARE, SERVICE OR OTHER OFFERING MAY NOT
BE HACKED, COMPROMISED AND/OR CIRCUMVENTED.
CARRIER DOES NOT WARRANT THAT ANY PRODUCT (INCLUDING SECURITY
PRODUCTS), SOFTWARE OR SERVICE MANUFACTURED, SOLD OR LICENSED
BY CARRIER WILL PREVENT, OR IN ALL CASES PROVIDE ADEQUATE WARNING
OF OR PROTECTION FROM, BREAK-INS, BURGLARY, ROBBERY, FIRE, OR
OTHERWISE.

4 POE304-MS PoE Injector User Manual
CARRIER DOES NOT WARRANT TO YOU THAT ITS SOFTWARE OR PRODUCTS
WILL WORK PROPERLY IN ALL ENVIRONMENTS AND APPLICATIONS AND DOES
NOT WARRANT ANY PRODUCTS AGAINST HARMFUL ELECTROMAGNETIC
INTERFERENCE INDUCTION OR RADIATION (EMI, RFI, ETC.) EMITTED FROM
EXTERNAL SOURCES
CARRIER DOES NOT PROVIDE MONITORING SERVICES FOR YOUR
ALARM/SECURITY SYSTEM (“MONITORING SERVICES”). IF YOU ELECT TO HAVE
MONITORING SERVICES YOU MUST OBTAIN SUCH SERVICE FROM A THIRD
PARTY AND CARRIER MAKES NO REPRESENTATION OR WARRANTY WITH
RESPECT TO SUCH SERVICES INCLUDING WHETHER OR NOT THEY WILL BE
COMPATIBLE WITH THE PRODUCTS, SOFTWARE OR SERVICES
MANUFACTURED, SOLD OR LICENSED BY CARRIER.
Intended use
Use this product only for the purpose it was designed for; refer to the data sheet and
user documentation. For the latest product information, contact your local supplier or
visit us online at firesecurityproducts.com.
The system should be checked by a qualified technician at least every 3 years and the
backup battery replaced as required.
Advisory messages
Advisory messages alert you to conditions or practices that can cause unwanted
results. The advisory messages used in this document are shown and described below.
WARNING: Warning messages advise you of hazards that could result in injury or loss
of life. They tell you which actions to take or to avoid in order to prevent the injury or
loss of life.
Caution: Caution messages advise you of possible equipment damage. They tell you
which actions to take or to avoid in order to prevent the damage.
Note: Note messages advise you of the possible loss of time or effort. They describe
how to avoid the loss. Notes are also used to point out important information that you
should read.

POE304-MS PoE Injector User Manual 5
Chapter 1
Introduction
The description of the IFS POE304-MS model is as follows:
Single-port 802.3af/at/bt PoE injector, 10/100/1000 Mbps, 60 W PoE power budget.
Unless specified, the term “PoE injector” mentioned in this user manual refers to the
POE304-MS.
Package contents
Open the box of the PoE injector and carefully unpack it. The box should contain the
following items:
The PoE injector × 1
User manual × 1
If any of these are missing or damaged, contact your dealer immediately. If possible,
retain the carton including the original packing materials for repacking the product in
case there is a need to return it to us for repair.
Product description
Quick and Easy Gigabit Ultra Power PoE Network Deployment
The PoE injector is a Single-Port, 802.3bt Power over Ethernet (PoE) Injector with a
maximum of 60 W of power output over Ethernet cables. It is designed specifically to
meet the demand for growing higher power required network equipment such as:
•PTZ speed dome
•AIO (All-in-One) touch PC
•Remote digital signage display
•Other network devices that need higher power to work normally.
The PoE injector delivers Ethernet digital data with 56 VDC power over the twisted-pair
cables as a 60 W PoE Injector.

Chapter 1: Introduction
6 POE304-MS PoE Injector User Manual
Intelligent LED Indicator for PoE Mode and Real-time PoE Usage
The PoE injector was built in legacy mode to provide the power to those PD devices
that do not follow the IEEE 802.3af/at/bt standard. Moreover, the PoE injector helps
users to monitor the current status of PoE power usage easily and efficiently via its
advanced LED indication. “PoE Power Usage” displayed on the front panel of the PoE
injector has three LED indicators of different power usages. Via the power usage LED,
the PoE injector permits the administrator to monitor the status of the power usage of
the connected PDs in real time.
60 W of Power over four-pair UTP
The PoE injector uses the IEEE 802.3af/at PoE cabling standard. Instead of delivering
power over 2-pair twisted UTP – be it end-span (Pins 1, 2, 3 and 6) or mid-span (Pins
4, 5, 7 and 8), it provides the capability to source up to 60 Wof power by using all the
four pairs of standard Cat. 5e/Cat. 6 Ethernet cabling. In the new four-pair system, two
PSE controllers will be used to power both the data pairs and the spare pairs.
PoE Standard IEEE 802.3af
(802.3at Type 1)
IEEE 802.3at
(802.3at Type 2) IEEE 802.3bt
Maximum Power
delivered by PSE 15.4 W30 W60 W
Power Available at PD 12.95 W25.5 W50 W
Voltage Range 48 V50~56 V52-56 V
Twisted-pair Used 2-pair 4-pair
Supported Modes End-span or Mid-span End-span + Mid-span
Supported Cabling Cat. 3/5/5e/6 Cat. 5e/6
All-in-One and Compact Size Design
The PoE injector comes in compact housing and features one 52~56 VDC input power
jacket, one power LED, PoE-in-use LED, and legacy LED. Two RJ45 ports -- Ethernet
port and Ethernet + DC port – are available on the side panel. Simply plug in the
Ethernet cables and DC power cord, and the PoE injector is ready to provide high-
speed network communication and the 802.3bt PoE injector functions simultaneously
with no software configuration required.
Plug and play, easy cabling installation
The PoE injector can be installed by simple plug and play. It is used between Power
Source Equipment (PSE) and Powered Devices (PD). The PoE injector injects power to
the PD without affecting the data transmission performance. The PoE injector also
offers a cost-effective and quick solution to doubling the standard range of PoE from
100 to 200 m.
The PoE injector is designed in a compact mini box containing five RJ45 ports and one
"PoE IN" port that functions as a PoE (Data and Power) input. The four "PoE OUT"
ports on the other side of the PoE injector function as PoE (Data and Power) output.
The "PoE OUT" port is also the power injector to transmit DC voltage over the Cat.
5/5e/6 cable and transfer data and power simultaneously between the PSE and PD.

Chapter 1: Introduction
POE304-MS PoE Injector User Manual 7
Product features
Interface
•Two RJ45 interfaces.
•One-port data and power input.
•One-port data input.
•One DC 52~56 V input power socket.
•One PoE mode (standard/legacy) DIP switch.
Power over Ethernet
•Complies with IEEE 802.3af/at/bt PoE end-span/mid-span PSE
•Supports PoE power up to 60 W for PoE port
•Auto-detection of PoE IEEE 802.3af/at/bt equipment and devices from being
damaged by incorrect installation.
•Monitor the status of the total PoE usage in real time.
•Remote power feeding up to 100 m.
•Auto-detection of DC input voltage.
Hardware and installation
•Metal case
•Wall-mount design
•All-in-one compact size design
•LED indicators for Power LED, PoE-in-Use LED, Legacy LED, and PoE Usage LED.
•Plug and Play installation
Notes:
1. PSE (Power Sourcing Equipment) is a device (e.g., a switch or hub) that provides
power in a PoE setup. Maximum allowed continuous output power per such a
device in IEEE 802.3af is 15.4 W, and in IEEE 802.3at is 30 W.
2. PD (Powered Device) is a PoE-enabled terminal by PSE and thus consumes
energy. Examples include PoE IP phones, PoE IP cameras, and PoE wireless
access points.

Chapter 1: Introduction
8POE304-MS PoE Injector User Manual
Product specifications
Hardware Specifications
Interface
Input Port:
1 x RJ45 STP
Data In
Output Port:
1 x RJ45 STP
POE (Data + Power) Out
DC Socket:
1 x 52~56 VDC input socket
Cable Twisted-pair cable up to 100 m (328 ft.):
10BASE-T: 4-pair UTP Cat. 3, 4,5, 5e, 6
100BASE-TX: 4-pair UTP Cat. 5, 5e, 6
1000BASE-T: 4-pair UTP Cat. 5e,6
Note: This device doesn’t support a cable length extending feature.
LED
System:
PWR (Green)
PoE Port:
PoE-in-Use (Orange)
Legacy Mode:
Legacy (Orange)
PoE Usage:
20 W, 40 W, and 60 W+ (Orange)
Data Rate 10/100/1000 Mbps
Dimensions (W x D x H) 94 x 70.3 x 26.2 mm
Weignt 200 g
Unit Output Voltage DC 54V
Power Requirements DC input 54 V, 1.33 A
Power Consumption 72 W max.
Number of devices that can
be powered
1
Power over Ethernet
PoE Standard IEEE 802.3af/at/bt Ultra PoE PSE (bt pre-standard so far)
PoE Power Supply Type End-span + Mid-span
Power Pin Assignment
Pair 1 End-span
1/2(-), 3/6(+);
Pair 1 Mid-span
4/5(+), 7/8(-)
PoE Power Output Budget DC 54 V / 60 W PoE via 4-pair
DC 54 V / 30 W PoE via 2-pair

Chapter 1: Introduction
POE304-MS PoE Injector User Manual 9
Standards Conformance
Regulation Compliance FCC Part 15 Class A, CE
Standards Compliance
IEEE 802.3 10BASE-T Ethernet
IEEE 802.3u 100BASE-TX Fast Ethernet
IEEE 802.3ab 1000BASE-T Gigabit Ethernet
IEEE 802.3bt 4-pair Power over Ethernet (pre-standard)
IEEE 802.3at Power over Ethernet Plus
IEEE 802.3af Power over Ethernet
Environment
Operating Temperature: 0 to 50°C
Relative Humidity: 5 to 90% (non-condensing)
Storage Temperature: -10 to 70°C
Relative Humidity: 5 to 90% (non-condensing)

10 POE304-MS PoE Injector User Manual
Chapter 2
Hardware description
Physical dimensions
Dimensions (W x D x H): 94 x 70.3 x 26.2 mm

Chapter 2: Hardware description
POE304-MS PoE Injector User Manual 11
Product rendering
LED indicators
Top panel
LED Color Function
PWR Green Lit: indicates that the 802.3bt PoE injector has power.
PoE-in-Use Orange Lit: indicates that the device is providing PoE power.
Legacy Orange Lit: indicates that the device is working in legacy mode.
PoE power usage
LED Color Function
20 W Orange
Off: indicates the PoE usage is less than 9 W.
Blinking: indicates the PoE usage is 10 to 19 W.
Lit:indicates the PoE usage is 20 to 29 W.
40 W Orange
Blinking: indicates the PoE usage is 30 to 39 W.
Lit:indicates the PoE usage is 40 to 49 W.
60 W+ Orange
Blinking: indicates the PoE usage is 50 to 59 W.
Lit:indicates the PoE usage is at maximum.

Chapter 2: Hardware description
12 POE304-MS PoE Injector User Manual
DC input voltage
LED Function
20W/30W Flashing three times means the DC input voltage is 48~51 V.
40W/60W Flashing three times means the DC input voltage is 52~54 V.
60W+/90W+ Flashing three times means the DC input voltage is 55~56 V.
PoE mode
PoE Mode Description
Standard Fully conforms to the IEEE 802.3af/at/bt standard.
Legacy
Legacy detection identifies PD devices that do not fully follow the IEEE
802.3af/at/bt standard and their unique electrical signatures so that the PoE
injector can provide power to those PD devices. Legacy mode will
handshake to check if this connected device is a PoE device first. If
handshaking fails, forced output power is used.

13 POE304-MS PoE Injector User Manual
Chapter 3
Installation
This section describes how to install the PoE injector and make connections to it.
Please read the following topics and perform the procedures in the order presented.
Before installation
Before installation, we recommend checking the network environment. If there is any
IEEE 802.3bt device that needs to be powered on and works normally, the PoE injector
provides a way to supply power to this Ethernet device conveniently and easily. The
PoE injector is equipped with a power adapter with a 100-240 VAC input and injects DC
52~56 V power into the pin of the twisted pair cable (pair 1/2 [-], 3/6 [+] and pair 4/5[+],
7/8[-]).
PoE injector installation
1. Connect the AC power adapter to the “52~56V DC IN” connector on the PoE
injector. The “PWR” LED illuminates steadily.
2. Connect a standard Ethernet cable from an Ethernet switch or PC workstation to the
“Ethernet” port on the PoE injector..
3. Connect the long cable to “Ethernet+DC” port.
4. Connect to IEEE 802.3af/at/bt devices. Because of its IEEE 802.3af/at/bt Power
over Ethernet capability, the PoE injector can directly connect with any IEEE
802.3af/at/bt end-nodes such as PTZ (Pan, Tilt & Zoom) network cameras, PTZ
speed domes, color touch screens, Voice over IP (VoIP) telephones, and multi-
channel wireless LAN access points that support IEEE 802.3af/at/bt In-line PoE
ports.

Chapter 3: Installation
14 POE304-MS PoE Injector User Manual
5. After the PoE injector detects the existence of an IEEE 802.3af/at/bt device, the
PoE-in-Use LED indicator illuminates steadily to indicate that it is providing power.
Note: Because the PoE injector supports a 52-56 VDC PoE power output, ensure that
the powered device (PD) supports the PoE standard.
PoE injector and POE304-EX-4P PoE extender
installation
1. Connect the power adapter to “52-56V DC IN” on the PoE injector. The “PWR” LED
illuminates steadily.
2. Connect a standard Ethernet cable from “Ethernet+DC” port of the PoE injector to
the “PoE IN” port of the PoE extender.
3. The PoE injector delivers both Ethernet Data and PoE power over UTP cable to the
PoE extender and the POE-in-Use LED of PoE injector and the “PWR” LED of the
PoE extender illuminate steadily.
4. Connect the additional standard Ethernet cable to be used for connecting the
remote powered device (PD) to the “PoE OUT” port of the poE extender.
5. The "PoE OUT" port is also the power injectors that transmit DC voltage to the
standard network cable and transfer data and power simultaneously between the
PoE injector and PD.
6. After the PoE extender detects the existence of an IEEE 802.3af/at device, the “PoE
OUT” LED indicator illuminates steadily ON to indicate that it is providing power.

Chapter 3: Installation
POE304-MS PoE Injector User Manual 15
Notes:
1. If the connected device is not fully compliant with the IEEE 802.3af/at standard or
in-line power device, the PoE OUT LED indicator of the PoE extender does not
illuminate steadily.
2. According to the IEEE 802.3af/at standard, the PoE extender will not inject power to
the cable if the connected device doesn’t support the IEEE 802.3af/at standard.

16 POE304-MS PoE Injector User Manual
Appendix A
Networking connection
RJ45 pin assignments
10/100Mbps, 10/100BASE-TX
Pin number
MDI MDI-X PoE
1
Tx + (transmit) Rx + (receive) Positive (VCC+)
2
Tx - (transmit) Rx - (receive) Positive (VCC+)
3
Rx + (receive) Tx + (transmit) Negative (VCC-)
4, 5
Not used Not used
6
Rx + (receive) Tx + (transmit) Negative (VCC-)
7, 8
Not used Not used
RJ45 cable pin assignments
The standard RJ45 receptacle/connector:
There are eight wires on a standard UTP/STP cable and each wire is color-coded. The
following shows the pin allocation and the color of the straight cable and crossover
cable connection: