Planet GSD-908HP User manual

8-Port 10/100/1000T 802.3at PoE +
1-Port 10/100/1000T Desktop Switch
GSD-908HP
User’s Manual

Trademarks
Copyright © PLANET Technology Corp. 2014.
Contents are subject to revision without prior notice.
PLANET is a registered trademark of PLANET Technology Corp. All other trademarks
belong to their respective owners.
Disclaimer
PLANET Technology does not warrant that the hardware will work properly in all
environments and applications, and makes no warranty and representation, either
implied or expressed, with respect to the quality, performance, merchantability, or
tness for a particular purpose.
PLANET has made every effort to ensure that this User’s Manual is accurate;
PLANET disclaims liability for any inaccuracies or omissions that may have
occurred.
Information in this User’s Manual is subject to change without notice and does not
represent a commitment on the part of PLANET. PLANET assumes no responsibility
for any inaccuracies that may be contained in this User’s Manual. PLANET makes
no commitment to update or keep current the information in this User’s Manual,
and reserves the right to make improvements to this User’s Manual and/or to the
products described in this User’s Manual, at any time without notice.
If you nd information in this manual that is incorrect, misleading, or incomplete,
we would appreciate your comments and suggestions.
FCC Warning
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. These 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 accordance 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.
CE Mark Warning
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.

Energy Saving Note of the Device
This power required device does not support Standby mode operation.
For energy saving, please remove the power cable to disconnect the device from
the power circuit.
Without removing power cable, the device will still consuming power from the
power source. In the view of Saving the Energy and reduce the unnecessary power
consuming, it is strongly suggested to remove the power connection for the device
if this device is not intended to be active.
WEEE Warning
To avoid the potential effects on the environment and human health as a
result of the presence of hazardous substances in electrical and electronic
equipment, end users of electrical and electronic equipment should
understand the meaning of the crossed-out wheeled bin symbol. Do not
dispose of WEEE as unsorted municipal waste; WEEE has to be collected
separately.
Revision
PLANET 8-Port 10/100/1000T 802.3at PoE + 1-Port 10/100/1000T Desktop Switch
User’s Manual
For Model: GSD-908HP
Revision: 1.0 (JUNE, 2014)
Part No.: 2351-AK3180-000

Table of Contents
1. Introduction ............................................................................................... 5
1.1 Checklist............................................................................................. 5
1.2 Product Description.............................................................................. 5
1.3 Features ............................................................................................. 7
1.4 Specications ...................................................................................... 8
2. Hardware Description .................................................................................. 9
2.1 Front Panel ......................................................................................... 9
2.1.1 LED Indicators ........................................................................... 9
2.2 Rear Panel .........................................................................................10
3. Installation................................................................................................11
3.1 Desktop Installation ............................................................................11
3.2 Magnet Installation .............................................................................12
3.3 Wall Mount Installation........................................................................13
3.4 Protective Grounding Cable Installation.................................................14
3.4.1 Installation Environment with Grounding Bar ...............................14
3.4.2 Installation Environment without Grounding Bar...........................15
3.5 Hardware Connection..........................................................................16
4. Troubleshooting .........................................................................................18
Appendix: A Networking Connection .................................................................19
A.1 PoE RJ-45 Port Pin Assignments...........................................................19
A.2 Switch’s Data RJ-45 Pin Assignments - 1000Mbps, 1000Base-T ..............19
A.3 10/100Mbps, 10/100Base-TX ...............................................................20

5
1. Introduction
1.1 Checklist
Check the contents of your package for the following parts:
zGSD-908HP x 1
zUser’s Manual x 1
zExternal AC to DC Adapter x 1
zPower Cord x 1
zWall Mount Kit x 1
zMagnet / Screw x 4
zRubber Feet x 4
If any of these pieces are missing or damaged, please contact your dealer
immediately; if possible, retain the carton including the original packing material,
and use them again to repack the product in case there is a need to return it to us
for repair.
The term “PoE Ethernet Switch” mentioned in this user’s manual also means the
GSD-908HP.
1.2 Product Description
Centralized Power Distribution for Ethernet Networking
The GSD-908HP, a new member in the PLANET 802.3af / 802.3at PoE Unmanaged
Gigabit Ethernet Switch family, is an 8-port 10/100/1000T 802.3at Power
over Ethernet + 1-port 10/100/1000T Desktop Switch with a total of 120
watts of PoE budget, which is an ideal solution to fullling the demand of sufcient
PoE power for network applications with Gigabit Ethernet speed transmission. The
eight 802.3af / 802.3at PoE Gigabit ports provides PoE power injector function
which is able to drive 8 IEEE 802.3af compliant powered devices or 4 IEEE 802.3at
compliant powered devices. The GSD-908HP also provides a simple, cost-effective
and non-blocking Gigabit wire-speed performance. It comes with a metal compact
housing, suitable for desktop deployment in SOHO ofce or department network
application.

6
Perfectly Integrated Solution for IP PoE Camera and NVR System
Different from the general IT industrial PoE Switch which usually comes with 12 or
24 PoE ports, the GSD-908HP provides eight 802.3af / 802.3at PoE Gigabit ports
for catering to small scale of IP Surveillance networks at a lower total cost. The
GSD-908HP comes with high performance switch architecture and 120-watt PoE
power budget. The recorded video les from 8 PoE IP Cameras can be powered by
the GSD-908HP and saved in the 8-channel NVR system or surveillance software
to perform comprehensive security monitoring. For instance, one GSD-908HP
can be combined with one 8-channel NVR and 8 PoE IP cameras as a kit for the
administrators to centrally and efciently manage the surveillance system in the
local LAN and the remote site via Internet.
Stable and High Performance Switch Architecture
The GSD-908HP has a 4K MAC address table, featuring high performance switch
architecture capable of providing the non-blocking 18Gbps switch fabric and wire-
speed throughput as high as 13.3Mpps, which greatly simplies the tasks of
upgrading the LAN for catering to increasing bandwidth demands. Besides, the
802.3x Full-Duplex ow control function of the GSD-908HP enables PD devices
and servers to be directly connected to the switch for wire-speed packet transfer
performance without the risk of packet loss.
The GSD-908HP RJ-45 copper interfaces support 10/100/1000Mbps Auto-
Negotiation at port 1 to port 9 for optimal speed detection through RJ-45 Category
6, 5 or 5e cables. It also supports standard Auto-MDI/MDI-X that can detect the
type of connection to any Ethernet device without requiring special straight or
crossover cables.
Easy Cable Connection
With data and power over Ethernet from one unit, the GSD-908HP reduces cabling
requirements and eliminates the need for dedicated electrical outlets on the wall,
ceiling or any unreachable place. A wire that carries both data and power can
lower the installation costs, simplify the installation effort and eliminate the need
for electricians or extension cords. Providing 8 PoE interfaces, the GSD-908HP
is ideal for small businesses and workgroups requiring deploying the PoE for the
wireless access points, IP-based surveillance camera or IP phones in any places
easily, efciently and cost-effectively.

7
1.3 Features
zRJ-45 Interface
Complies with IEEE 802.3, 10Base-T, IEEE 802.3u, 100Base-TX, IEEE 802.3ab,
1000Base-T
9-Port 10/100/1000Mbps Gigabit Ethernet Switch
8-Port supports 51V DC power to PoE Powered Device (Port 1 to port 8)
zPower over Ethernet
Complies with IEEE 802.3af / 802.3at Power over Ethernet End-Span PSE
Up to 8 IEEE 802.3af devices powered
Supports PoE Power up to 15.4 watts for each PoE port
Up to 4 IEEE 802.3at devices powered
Supports PoE Power up to 30 watts for each PoE port
120-watt PoE budget
Auto detects powered device (PD)
Circuit protection prevents power interference between ports
Remote power feeding up to 100m
zSwitching
Hardware based 10/100Mbps, Half / Full Duplex and 1000Mbps Full Duplex
mode, Flow Control and Auto-negotiation and Auto MDI/MDI-X
 Features Store-and-Forward mode with wire-speed ltering and forwarding
rates
 IEEE 802.3x ow control for Full Duplex operation and backpressure for Half
Duplex operation
Integrates address look-up engine, supporting 4K absolute MAC addresses
192 KB packet buffer
9K Jumbo frame supports at 1000Mbps speed duplex mode
Automatic address learning and address aging
Supports CSMA/CD protocol
zHardware
Made of metal and desktop size and wall-mount design
LED indicators for system power, PoE usage 100%, per port PoE In-Use (Port
1 to port 8), per port Link / Act (10/100/1000Mbps, port 1 to port 9).
51V DC, 2.5A external power adapter
FCC, CE Class A compliant

8
1.4 Specications
Model GSD-908HP
Hardware Specications
Network Connector 9-Port RJ-45 for 10/100/1000Base-T
PoE Inject Port 8-Port with 802.3af / 802.3at PoE injector function
LED Display
System: Power (Green), PoE Usage 100% (Green)
Per PoE Port: PoE (Green), port 1 to port 8
LNK/ACT (Orange), port 1 to port 9
Switch Architecture Store and forward
MAC Address Table 4K MAC address table with auto learning function
Data Buffer 192 KB
Switch Fabric 18Gbps
Switch Throughput 13.3Mpps@64Bytes
Flow Control Back pressure for Half-Duplex. IEEE 802.3x Pause
Frame for Full-Duplex
Power Requirements DC 51V, 2.5A max.
Power Consumption 120 watts / 409BTU
Dimensions (W x D x H) 103 x 235 x 27 mm
Weight 628g
Power over Ethernet
PoE Standard IEEE 802.3af / 802.3at Power over Ethernet PSE
PoE Power Supply Type End-Span
PoE Power Output Per Port 51V DC, 350mA. Max. 15.4 watts
Per Port 51V DC, 600mA. Max. 30 watts
Power Pin Assignment 1/2(+), 3/6(-)
PoE Power Budget 120 watts
Max. Number of Class 2 PD 8
Max. Number of Class 3 PD 8
Max. Number of Class 4 PD 4
Standard Conformance
EMI Safety FCC Class A, CE
Operating Environment 0 ~ 50 degrees C
Storage Environment -10 ~ 70 degrees C
Operating Humidity 5 ~ 95%, relative humidity (non-condensing)_
Storage Humidity 5 ~ 95%, relative humidity (non-condensing)
Standard Compliance
IEEE 802.3
IEEE 802.3u
IEEE 802.3ab
IEEE 802.3x
IEEE 802.3af
IEEE 802.3at
Ethernet
Fast Ethernet
Gigabit Ethernet
Flow Control
Power over Ethernet
High Power over Ethernet

9
2. Hardware Description
This product provides three different running speeds –10/100/1000Mbps at port 1
to port 9 and automatically distinguishes the speed of incoming connection.
This section describes the hardware features of the GSD-908HP. For easier
management and control of the switch, familiarize yourself with its display
indicators, and ports. Front panel illustrations in this chapter display the unit LED
indicators. Before connecting any network device to the GSD-908HP, please read
this chapter carefully.
2.1 Front Panel
The front panel of the GSD-908HP PoE Ethernet Switch consists of 9x Auto-Sensing
10/100/1000Mbps Ethernet RJ-45 Ports. The LED Indicators are also located on the
RJ-45 ports of the PoE Ethernet Switch.
GSD-908HP
PWR
PoE Usage 100%
ACTLNK PoE In-Use
87654321 9- Uplink
Figure 2-1: GSD-908HP Switch Front Panel
2.1.1 LED Indicators
System
LED Color Function
PWR Green Light: Indicates the switch has power.
PoE Usage
100% Green Light: Indicates the system has 100% PoE power usage.
Per 10/100/1000T Port
LED Color Function
LNK/ACT Orange
Light: indicates the link through that port is successfully
established at 10/100/1000Mbps.
Blink: indicates that the switch is actively sending or
receiving data over that port.
PoE In-Use Green Light: indicates the port is providing 51V DC in-line power
(1-8 ports).

10
2.2 Rear Panel
The rear panel of the PoE Ethernet Switch indicates a DC power socket, which
accepts DC 51V input power; there is a security slot that allows using an anti-
theft lock to attach the PoE Ethernet Switch to a xed object against theft. The
grounding terminal provides lightning protection ability for the PoE Ethernet Switch.
51V DC
Figure 2-2: GSD-908HP Switch Rear Panel
Power
Notice
The device is a power-required device, meaning it will not work till
it is powered. If your networks should be active all the time, please
consider using UPS (Uninterrupted Power Supply) for your device.
It will prevent you from network data loss or network downtime.
In some areas, installing a surge suppression device may also help
to protect your GSD-908HP from being damaged by unregulated
surge or current to the GSD-908HP or the power adapter.
Before startup
Before your installation begins, please refer to the following for your cabling:
10/100/1000Base-T (Port 1 to Port 9)
The 10/100/1000Base-T port comes with Auto-Negotiation capability, which
automatically supports 1000Base-T, 100Base-TX and 10Base-T networks. Users
only need to plug a working network device into the 10/100/1000Base-T port, and
then turn on the PoE Ethernet Switch. The port will automatically run in 10Mbps,
20Mbps, 100Mbps or 200Mbps and 1000Mbps or 2000Mbps after negotiating with
the connected device.
Cabling
Each 10/100/1000Base-T port uses RJ-45 sockets -- similar to phone jacks
-- for connection of unshielded twisted-pair cable (UTP). The IEEE 802.3 /
802.3u / 802.3ab Fast / Gigabit Ethernet standard requires Category 5 UTP for
100Mbps 100Base-TX. 10Base-T networks can use Cat.3, 4, 5 or 1000Base-T uses
Cat.5/5e/6 UTP (see table below). Maximum distance is 100 meters (328 feet).
Port Type Cable Type Connector
10Base-T Cat 3, 4, 5, 2-pair RJ-45
100Base-TX Cat.5 UTP, 2-pair RJ-45
1000Base-T Cat.5/5e/6 UTP, 4-pair RJ-45
Any Ethernet devices like hubs/PCs can connect to the GSD-908HP PoE Ethernet
Switch by using straight-through wires. The nine RJ-45 ports are auto-MDI/MDI-X,
which can be used on straight-through or crossover cable.

11
3. Installation
3.1 Desktop Installation
To install the PoE Ethernet Switch on desktop, simply follow the following steps:
Step 1: Attach the rubber feet to the recessed areas on the bottom of the PoE
Ethernet Switch, as shown in Figure 3-1.
GSD-908HP
PWR
PoE Usage 100%
ACTLNK PoE In-Use
87654321 9-
Uplink
Figure 3-1: Place the PoE Ethernet Switch on the Desktop
Step 2: Place the PoE Ethernet Switch on desktop near an AC power source.
Step 3: Keep enough ventilation space between the PoE Ethernet Switch and the
surrounding objects.
Note
When choosing a location, please keep in mind the environmental
restrictions discussed in Chapter 1, Section 4 under Specifications.
Step 4: Connect your PoE Ethernet Switch to 802.3af / 802.3at complied Powered
Devices (PD) and other network devices.
A. Connect one end of a standard network cable to the 10/100/1000 RJ-45
ports on the front panel of the PoE Ethernet Switch.
B. Connect the other end of the cable to the network devices such as printer
servers, workstations, router, etc.
Note
Connection to the PoE Ethernet Switch requires UTP Category
6/5e/5 network cabling with RJ-45 tips. For more information,
please see the Cabling Specifications in Appendix A.

12
Step 5: Supply power to the PoE Ethernet Switch.
A. Connect one end of the power cable to the DC power adapter and
connect its DC plug connector to the PoE Ethernet Switch.
B. Connect the power plug of the power cable to a standard wall outlet.
When the PoE Ethernet Switch receives power, the Power LED should remain solid
Green.
3.2 Magnet Installation
To install the PoE Ethernet Switch on magnetic surface, simply follow the following
steps:
Step 1: Attach the 4 magnets to the recessed areas on the bottom of the PoE
Ethernet Switch.
Step 2: Use 4 screws from package to secure the magnets to the PoE Ethernet
Switch, as shown in Figure 3-2.
GSD-908HP
PWR
PoE Usage 100%
ACTLNK PoE In-Use
87654321 9-
Uplink
GSD-908HP
Figure 3-2: PoE Ethernet Switch Magnets Installation
Step 3: Place the PoE Ethernet Switch (installed with magnets) on a magnetic
surface in a proper way.
When installing the PoE Ethernet Switch on a magnetic surface,
please be careful with your fingers.

13
Step 4: Proceed with Step 4 and Step 5 of session 3.1 Desktop Installation
to connect the network cabling and supply power to your PoE Ethernet
Switch.
1. Select the installation surface carefully. If the magnetic surface
is not providing enough magnetism, the reliability of this instal-
lation will be influenced.
2. Please do not choose higher installation position and note vibra-
tion might cause PoE Ethernet Switch to fall down and damage
or personal injury.
3. Please do not move the PoE Ethernet Switch often to avoid
damage to the coated surface.
4. For connecting Ethernet cable to the PoE Ethernet Switch easily,
please place the PoE Ethernet Switch with RJ-45 interface at a
lower position. We also must pay attention to the weight of the
installed Ethernet cables to avoid PoE Ethernet Switch to fall
down.
5. Keep magnets away from specific objects such as magnetic card,
computer and computer monitor, which are easy to be magne-
tized. Otherwise, the PoE Ethernet Switch malfunctions might
happen.
3.3 Wall Mount Installation
To install the PoE Ethernet Switch on the wall, simply follow the following steps:
Step 1: There are 2 holes with 5mm diameter on the wall; the distance between
the 2 holes is 110mm and the line through them must keep horizontal, as
shown in Figure 3-3.
Step 2: Install a conductor pipe inside the board hole and ush the edge of the
conductor pipe with the wall surface.
Step 3: Screw the bolts into the conductor pipe; the distance between the inside
surface of the screw header and edge of conductor pipe should not be
less than 2.5mm to make sure the PoE Ethernet Switch can be hung on
the bolt tightly.

14
Step 4: Align two wall type holes at the bottom of the PoE Ethernet Switch with
screws and hang the PoE Ethernet Switch on it.
51V DC
Figure 3-3: PoE Ethernet Switch Wall Mount Installation
3.4 Protective Grounding Cable Installation
The proper connection of the protective grounding cable is not only for quickly
releasing the over voltage and over current from lightning strike, it also provides
necessary protection for users’ body security.
3.4.1 Installation Environment with Grounding Bar
Connect one end of the protective grounding cable to the binding post on the
grounding bar and x the screws, as shown in Figure 3-4.
51V DC
(1) AC Power Input Jack
(3) Protective Grounding Cable
(2) Binding Post
(4) Grounding Bar
(2)
(3)
(4)
(1)
Figure 3-4: Grounding Bar Installation

15
The PoE Ethernet Switch grounding cable should be connected to
the engineering land in the IT room because the water hoses and
lightning rods are not proper for grounding.
3.4.2 Installation Environment without Grounding Bar
3.4.2.1 With mud land nearby and allowed to bury grounding bar
Bury an angle iron or steel pipe (≥0.5m) into the mud land. The protective
grounding cable should be welded to the angle iron or steel pipe and the welding
point should be embalmed, as shown in Figure 3-5.
51V DC
(1) AC Power Input Jack
(4) Earth
(2) Binding Post
(3) Protective Grounding Cable
(5) Angle Iron
(1)
(2)
(3)
(5)
(4)
Figure 3-5: Ground Conductor Installation
3.4.2.2 Not allowed to bury grounding bar.
If not allowed to bury the grounding bar, directly connect the PoE Ethernet Switch
to the grounding bar through the power cord. Please ensure the provided adapter
that you use has a triplex plug and the power cord in the switchgear room or
beside the AC power supply transformer is well-grounded, as shown in Figure 3-6.
51V DC
Figure 3-6: Ground Power Cord Installation

16
3.5 Hardware Connection
The PoE Ethernet Switch provides exibility to build a standard network application
or PoE network application quick and easily, simply follow the following steps:
Standard Network Application: connecting end node or switch
Step 1: Supply power to the PoE Ethernet Switch.
A. Connect one end of the power cable to the DC power adapter and
connect its DC plug connector to the PoE Ethernet Switch.
B. Connect the power plug of the power cable to a standard wall outlet.
When the PoE Ethernet Switch receives power, the Power LED should remain solid
Green.
Step 2: Connect PC or laptop to one port of the PoE Ethernet Switch using
Category 5/5e/6 UTP cabling.
Step 3: Use an Ethernet cable to connect one upstream network devices (such as
another switch or router) to the uplink port on the switch, as shown in
Figure 3-7.
GSD-908HP
Internet
LaptopPC Laptop NAS
XDSL Router
1000Base-T UTP
Figure 3-7: End Node or Switch Connection
PoE Network Application: department / workgroup PoE switch
Step 1: Supply power to the PoE Ethernet Switch.
A. Connect one end of the power cable to the DC power adapter and
connect its DC plug connector to the PoE Ethernet Switch.
B. Connect the power plug of the power cable to a standard wall outlet.
When the PoE Ethernet Switch receives power, the Power LED should remain solid
Green.

17
Step 2: Providing up to eight 802.3at / 802.3af PoE in-line interfaces, use an
Ethernet cable to connect various 802.3at / 802.3af PD devices. Such as
wireless AP, IP Phone and IP Camera devices, as shown in Figure 3-8.
DC
NN
Laptop
Backbone Switch
PoE VoIP Phone PC PC PC
Power
PTZ CameraPoE Wireless AP
GSD-908HP
PoE PoE PoE
DC Power Line (DC)
1000Base-T UTP
PoE
1000Base-T UTP with PoE
2.4GHz 802.11n
N
Figure 3-8: Department / Workgroup PoE Switch Connection
Note
Since the GSD-908HP per PoE port supports 51V DC PoE power
output, please check and assure the Powered Device’s (PD) accept-
able DC power range is 51V DC. Otherwise, it will damage the
Powered Device (PD).

18
4. Troubleshooting
This chapter contains information to help you solve issues. If the PoE Ethernet
Switch is not functioning properly, make sure the PoE Ethernet Switch is set up
according to instructions in this manual.
The Link / Act LED is not lit
Solution:
Check the cable connection and remove duplex mode of the PoE Ethernet Switch.
Performance is bad
Solution:
Check the speed duplex mode of the partner device. The PoE Ethernet Switch is
run at auto-negotiation mode and if the partner is set to half duplex, then the
performance will be poor.
1000Base-TportlinkLEDislit,butthetrafcisirregular
Solution:
Check that the attached device is not set to dedicate full duplex. Some devices use
a physical or software switch to change duplex modes. Auto-negotiation may not
recognize this type of full-duplex setting.
Why the PoE Ethernet Switch doesn’t connect to the network
Solution:
Check the LNK/ACT LED on the PoE Ethernet Switch. Try another port on the PoE
Ethernet Switch. Make sure the cable is installed properly and make sure the cable
is the right type. Turn off the power. After a while, turn on power again.
Why I connect my PoE device to PoE Ethernet Switch and it cannot power on
Solution:
1. Please check the cable type of the connection from the PoE Ethernet Switch
(port 1 to port 8) to the other end. The cable should be an 8-wire UTP, Category
5 or above, EIA568 cable within 100 meters. A cable with only 4-wire, short
loop or over 100 meters will affect the power supply.
2. Please check and assure the device is fully complied with IEEE 802.3af / 802.3at
standard.
What is the power output of each PoE port?
Solution:
Each PoE port supports 51V DC, 350mA, max 15.4 watts power output. Detect
and inject by the standard of IEEE 802.3af.
Each PoE port supports 51V DC, 600mA, max 30 watts power output. Detect
and inject by the standard of IEEE 802.3at.

19
Appendix: A Networking Connection
A.1 PoE RJ-45 Port Pin Assignments
1 2 3 4 5 6 7 8
PIN NO RJ-45 POWER ASSIGNMENT
1Power +
2Power +
3Power -
6Power -
A.2 Switch’s Data RJ-45 Pin Assignments - 1000Mbps, 1000Base-T
PIN NO MDI MDI-X
1BI_DA+ BI_DB+
2BI_DA- BI_DB-
3BI_DB+ BI_DA+
4BI_DC+ BI_DD+
5BI_DC- BI_DD-
6BI_DB- BI_DA-
7BI_DD+ BI_DC+
8BI_DD- BI_DC-
Implicit implementation of the crossover function within a twisted-pair cable, or at
a wiring panel, while not expressly forbidden, is beyond the scope of this standard.

20
A.3 10/100Mbps, 10/100Base-TX
When connecting your PoE Ethernet Switch to another Fast Ethernet switch, a
bridge or a hub and a straight or crossover cable are necessary. Each port of the
Switch supports auto-MDI/MDI-X detection. That means you can directly connect
the Switch to any Ethernet devices without making a crossover cable. The following
table and diagram show the standard RJ-45 receptacle/ connector and their pin
assignments:
RJ-45 Connector Pin Assignment
PIN NO
MDI
Media Dependent
Interface
MDI-X
Media Dependent
Interface (Cross)
1Tx + (transmit) Rx + (receive)
2Tx - (transmit) Rx - (receive)
3Rx + (receive) Tx + (transmit)
4, 5 Not used
6Rx - (receive) Tx - (transmit)
7, 8 Not used
The standard cable, RJ-45 pin assignment
The standard RJ-45 receptacle/connector