LG-Ericsson iPECS ES-2026P User manual

U SER G UIDE
iPECS is an Ericsson-LG Brand
Please read this manual carefully before
operating your set. Retain it for future reference.
ES-2026/ES-2026P
Installation Manual

I NSTALLATION M ANUAL
ES-2026 / ES-2026P
ES-2026 ADVANCED SMART 26-PORT FE SWITCH
Layer 2 Advanced Smart Switch
with 24 10/100BASE-TX (RJ-45) Ports,
and 2 Gigabit Combination Ports (RJ-45/SFP)
ES-2026P ADVANCED SMART 26-PORT FE POE SWITCH
Layer 2 Advanced Smart Switch
with 24 10/100BASE-TX (RJ-45) PoE Ports,
and 2 Gigabit Combination Ports (RJ-45/SFP)
ES-2026 / ES-32026P
E012013-AP-R01
150200000588A

ES-2026 / ES-2026P
– 3 –
COMPLIANCES AND SAFETY STATEMENTS
FCC CLASS A
This device complies with Part 15 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.
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.
You are cautioned that changes or modifications not expressly approved by
the party responsible for compliance could void your authority to operate
the equipment.
You may use unshielded twisted-pair (UTP) for RJ-45 connections -
Category 3 or better for 10 Mbps connections, Category 5 or better for 100
Mbps connections, Category 5, 5e, or 6 for 1000 Mbps connections. For
fiber optic connections, you may use 50/125 or 62.5/125 micron
multimode fiber or 9/125 micron single-mode fiber.
INDUSTRY CANADA - CLASS A
This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital apparatus as set out in the interference-causing
equipment standard entitled “Digital Apparatus,” ICES-003 of the
Department of Communications.
Cet appareil numérique respecte les limites de bruits radioélectriques
applicables aux appareils numériques de Classe A prescrites dans la norme
sur le matériel brouilleur: “Appareils Numériques,” NMB-003 édictée par le
ministère des Communications.
CE MARK DECLARATION OF CONFORMANCE FOR EMI AND SAFETY (EEC)
This information technology equipment complies with the requirements of
the Council Directive 2004/108/EC on the Approximation of the laws of the
Member States relating to Electromagnetic Compatibility and 2006/95/EC

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for electrical equipment used within certain voltage limits and the
Amendment Directive 93/68/EEC. For the evaluation of the compliance
with these Directives, the following standards were applied:
The following declaration is for two models: (ES-2026/ES-2026P)
RFI Emission: ◆Limit class A according to EN 55022:2006+A1:2007
◆Limit class A for harmonic current emission
according to EN 61000-3-2/2006
◆Limitation of voltage fluctuation and flicker in low-
voltage supply system according to EN 61000-3-3/
1995+A2:2005
Immunity: ◆Product family standard according to EN
55024:1998+A2:2003
◆Electrostatic Discharge according to IEC 61000-4-
2:1995+A: 1998+A2:2000 (Contact Discharge: ±4
kV, Air Discharge: ±8 kV)
◆Radio-frequency electromagnetic field according to
IEC 61000-4-3:2006 (80 - 1000 MHz with 1 kHz AM
80% Modulation: 3 V/m)
◆Electrical fast transient/burst according to IEC
61000-4-4:2004
(AC/DC power supply: ±1 kV, Data/Signal lines:
±0.5 kV)
◆Surge immunity test according to IEC 61000-4-
5:2005
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2
kV)
◆Immunity to conducted disturbances, Induced by
radio-frequency fields: IEC 61000-4-6:2006 (0.15 -
80 MHz with 1 kHz AM 80% Modulation: 3 V/m)
◆Voltage dips, short interruptions and voltage
variations immunity test according to IEC 61000-4-
11:2004 (>95% Reduction @10 ms, 30% Reduction
@500 ms, >95% Reduction @5000 ms)
LVD: ◆EN 60950-1:2006+A11:2009

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SAFETY COMPLIANCE
SAFETY INSTRUCTION
This product complies with and conforms to the following international
Product Safety standards as applicable:
◆Safety of Information Technology Equipment, IEC(EN) 60950-1,
including all relevant national deviations as listed in Compliance with
IEC for Electrical Equipment (IECEE)
◆Safety of Information Technology Equipment, CAN/CSA-C22.2 No.
60950-1/UL 60950-1
POWER CORD SAFETY
Please read the following safety information carefully before installing the
switch:
WARNING: Installation and removal of the unit must be carried out by
qualified personnel only.
◆The unit must be connected to an earthed (grounded) outlet to comply
with international safety standards.
◆Do not connect the unit to an A.C. outlet (power supply) without an
earth (ground) connection.
◆The appliance coupler (the connector to the unit and not the wall plug)
must have a configuration for mating with an EN 60320/IEC 320
appliance inlet.
◆The socket outlet must be near to the unit and easily accessible. You
can only remove power from the unit by disconnecting the power cord
from the outlet.
◆This unit operates under SELV (Safety Extra Low Voltage) conditions
according to IEC 60950. The conditions are only maintained if the
equipment to which it is connected also operates under SELV
conditions.
France and Peru only
This unit cannot be powered from IT† supplies. If your supplies are of IT
type, this unit must be powered by 230 V (2P+T) via an isolation
transformer ratio 1:1, with the secondary connection point labelled
Neutral, connected directly to earth (ground).
† Impédance à la terre
Important! Before making connections, make sure you have the correct
cord set. Check it (read the label on the cable) against the following:

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ES-2026 / ES-2026P
Veuillez lire à fond l'information de la sécurité suivante avant d'installer le
Switch:
AVERTISSEMENT: L’installation et la dépose de ce groupe doivent être
confiés à un personnel qualifié.
◆Ne branchez pas votre appareil sur une prise secteur (alimentation
électrique) lorsqu'il n'y a pas de connexion de mise à la terre (mise à la
masse).
◆Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la
masse) afin de respecter les normes internationales de sécurité.
◆Le coupleur d’appareil (le connecteur du groupe et non pas la prise
murale) doit respecter une configuration qui permet un branchement
sur une entrée d’appareil EN 60320/IEC 320.
◆La prise secteur doit se trouver à proximité de l’appareil et son accès
doit être facile. Vous ne pouvez mettre l’appareil hors circuit qu’en
débranchant son cordon électrique au niveau de cette prise.
◆L’appareil fonctionne à une tension extrêmement basse de sécurité qui
est conforme à la norme IEC 60950. Ces conditions ne sont maintenues
Power Cord Set
U.S.A. and
Canada The cord set must be UL-approved and CSA certified.
The minimum specifications for the flexible cord are:
- No. 18 AWG - not longer than 2 meters, or 16 AWG.
- Type SV or SJ
- 3-conductor
The cord set must have a rated current capacity of at
least 10 A
The attachment plug must be an earth-grounding type
with NEMA 5-15P (15 A, 125 V) configuration.
Denmark The supply plug must comply with Section 107-2-D1,
Standard DK2-1a or DK2-5a.
Switzerland The supply plug must comply with SEV/ASE 1011.
U.K. The supply plug must comply with BS1363 (3-pin 13 A)
and be fitted with a 5 A fuse which complies with
BS1362.
The mains cord must comply with IEC 60227
(designation
60227 IEC 52).
Europe The supply plug must comply with CEE7/7 (“SCHUKO”).
The mains cord must comply with IEC 60227
(designation
60227 IEC 52).
IEC-320 receptacle.

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ES-2026 / ES-2026P
que si l’équipement auquel il est raccordé fonctionne dans les mêmes
conditions.
France et Pérou uniquement:
Ce groupe ne peut pas être alimenté par un dispositif à impédance à la
terre. Si vos alimentations sont du type impédance à la terre, ce groupe
doit être alimenté par une tension de 230 V (2 P+T) par le biais d’un
transformateur d’isolement à rapport 1:1, avec un point secondaire de
connexion portant l’appellation Neutre et avec raccordement direct à la
terre (masse).
Bitte unbedingt vor dem Einbauen des Switches die folgenden
Sicherheitsanweisungen durchlesen:
WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch
Fachpersonal erfolgen.
◆Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose
angeschlossen werden.
◆Das Gerät muß an eine geerdete Steckdose angeschlossen werden,
welche die internationalen Sicherheitsnormen erfüllt.
◆Der Gerätestecker (der Anschluß an das Gerät, nicht der
Wandsteckdosenstecker) muß einen gemäß EN 60320/IEC 320
konfigurierten Geräteeingang haben.
Cordon électrique - Il doit être agréé dans le pays d’utilisation
Etats-Unis et
Canada: Le cordon doit avoir reçu l’homologation des UL et un certificat de la CSA.
Les spécifications minimales pour un cable flexible
sont AWG No. 18, ouAWG No. 16 pour un cable de
longueur inférieure à 2 mètres.
- type SV ou SJ
- 3 conducteurs
Le cordon doit être en mesure d’acheminer un
courant nominal d’au moins 10 A.
La prise femelle de branchement doit être du type à
mise à la terre (mise à la masse) et respecter la
configuration NEMA 5-15P (15 A, 125 V).
Danemark: La prise mâle d’alimentation doit respecter la section
107-2 D1 de la norme DK2 1a ou DK2 5a.
Suisse: La prise mâle d’alimentation doit respecter la norme
SEV/ASE 1011.
Europe La prise secteur doit être conforme aux normes CEE
7/7 (“SCHUKO”)
Le cordon d'alimentation doit être conforme à la
norme IEC 60227 (IEC 60227 désignation 52)

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ES-2026 / ES-2026P
◆Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich
sein. Die Stromversorgung des Geräts kann nur durch Herausziehen
des Gerätenetzkabels aus der Netzsteckdose unterbrochen werden.
◆Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen
(Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen
sind nur gegeben, wenn auch die an das Gerät angeschlossenen Geräte
unter SELV-Bedingungen betrieben werden.
WARNINGS AND CAUTIONARY MESSAGES
W ARNING : This product does not contain any serviceable user parts.
W ARNING : Installation and removal of the unit must be carried out by
qualified personnel only.
W ARNING : When connecting this device to a power outlet, connect the field
ground lead on the tri-pole power plug to a valid earth ground line to
prevent electrical hazards.
W ARNING : This switch uses lasers to transmit signals over fiber optic cable.
The lasers are compliant with the requirements of a Class 1 Laser Product
and are inherently eye safe in normal operation. However, you should
never look directly at a transmit port when it is powered on.
C AUTION : Wear an anti-static wrist strap or take other suitable measures to
prevent electrostatic discharge when handling this equipment.
C AUTION : Do not plug a phone jack connector in the RJ-45 port. This may
damage this device.
C AUTION : Use only twisted-pair cables with RJ-45 connectors that conform
to FCC standards.
ENVIRONMENTAL STATEMENTS
The manufacturer of this product endeavours to sustain an
environmentally-friendly policy throughout the entire production process.
This is achieved though the following means:
◆Adherence to national legislation and regulations on environmental
production standards.
◆Conservation of operational resources.
Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:
Schweiz Dieser Stromstecker muß die SEV/ASE
1011Bestimmungen einhalten.
Europe Das Netzkabel muss mit IEC 60227 (IEC 60227
entsprechen Bezeichnung 52)
Der Netzstecker muß die Norm CEE 7/7 erfüllen
(”SCHUKO”).

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ES-2026 / ES-2026P
◆Waste reduction and safe disposal of all harmful un-recyclable by-
products.
◆Recycling of all reusable waste content.
◆Design of products to maximize recyclables at the end of the product’s
life span.
◆Continual monitoring of safety standards.
END OF PRODUCT LIFE SPAN
This product is manufactured in such a way as to allow for the recovery and
disposal of all included electrical components once the product has reached
the end of its life.
MANUFACTURING MATERIALS
There are no hazardous nor ozone-depleting materials in this product.
DOCUMENTATION
All printed documentation for this product uses biodegradable paper that
originates from sustained and managed forests. The inks used in the
printing process are non-toxic.

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ES-2026 / ES-2026P
ABOUT THIS GUIDE
PURPOSE This guide details the hardware features of the switches, including the
physical and performance-related characteristics, and how to install the
switches.
AUDIENCE The guide is intended for use by network administrators who are
responsible for installing and setting up network equipment; consequently,
it assumes a basic working knowledge of LANs (Local Area Networks).
CONVENTIONS The following conventions are used throughout this guide to show
information:
N OTE : Emphasizes important information or calls your attention to related
features or instructions.
C AUTION : Alerts you to a potential hazard that could cause loss of data, or
damage the system or equipment.
W ARNING : Alerts you to a potential hazard that could cause personal injury.
RELATED PUBLICATIONS The following publication gives specific information on how to operate and
use the management functions of the switch:
The User Manual
Also, as part of the switch’s software, there is an online web-based help
that describes all management related features.
REVISION HISTORY This section summarizes the changes in each revision of this guide.
JANUARY 2013 REVISION
This is the first revision of this guide.

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CONTENTS
COMPLIANCES AND SAFETY STATEMENTS 3
ABOUT THIS GUIDE 10
CONTENTS 11
FIGURES 14
TABLES 15
1I
NTRODUCTION 16
Overview 16
Switch Architecture 17
Network Management Options 17
Power-over-Ethernet 17
Description of Hardware 17
10/100BASE-TX Ports 17
SFP Transceiver Slots 18
Port and System Status LEDs 18
Mode Button
(ES-2026P) 19
Power Supply Inlet 20
Grounding Point 20
Reset Button 21
Features and Benifits 21
Connectivity 21
Expandability 21
Performance 22
Management 22
2NETWORK PLANNING 23
Introduction To Switching 23
Application Examples 23
Collapsed Backbone 23
PoE Connections 24

C ONTENTS
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ES-2026 / ES-2026P
Network Aggregation Plan 25
Remote Connections with Fiber Cable 25
Making VLAN Connections 26
Application Notes 27
3INSTALLING THE SWITCH 28
Selecting a Site 28
Ethernet Cabling 28
Equipment Checklist 29
Optional Rack-Mounting Equipment 30
Mounting 30
Rack Mounting 30
Desktop or Shelf Mounting 32
Connecting to a Power Source 32
Installing an Optional SFP Transceiver 33
4MAKING NETWORK CONNECTIONS 35
Connecting Network Devices 35
Twisted-Pair Devices 35
Power-over-Ethernet Connections 35
Cabling Guidelines 36
Connecting to PCs, Servers, Hubs, and Switches 36
Network Wiring Connections 37
Fiber Optic SFP Devices 38
Connectivity Rules 40
1000BASE-T Cable Requirements 40
1000 Mbps Gigabit Ethernet Collision Domain 40
100 Mbps Fast Ethernet Collision Domain 41
10 Mbps Ethernet Collision Domain 41
Cable Labeling and Connection Records 41
ATROUBLESHOOTING 43
Diagnosing LED Indicators 43
Power and Cooling Problems 43
Installation 43
In-Band Access 44
BCABLES AND PINOUTS 45
Twisted-Pair Cable Assignments 45

C ONTENTS
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ES-2026 / ES-2026P
10/100BASE-TX Pin Assignments 45
Straight-Through Wiring 46
Crossover Wiring 46
1000BASE-T Pin Assignments 47
Fiber Standards 48
CHARDWARE SPECIFICATIONS 50
Physical Characteristics 50
Switch Features 51
Management Features 52
Standards 52
Compliances 52
GLOSSARY 53
INDEX 56

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ES-2026 / ES-2026P
FIGURES
Figure 1: ES-2026 and ES-2026P Front Panels 16
Figure 2: Rear Panel 16
Figure 3: Port and System LEDs 18
Figure 4: Power Supply Inlet 20
Figure 5: Grounding Point 20
Figure 6: Reset Button 21
Figure 7: Collapsed Backbone 24
Figure 8: Supplying PoE Power 24
Figure 9: Network Aggregation Plan 25
Figure 10: Remote Connections with Fiber Cable 26
Figure 11: Making VLAN Connections 26
Figure 12: RJ-45 Connections 29
Figure 13: Grounding 30
Figure 14: Attaching the Brackets 31
Figure 15: Installing the Switches in a Rack 31
Figure 16: Attaching the Adhesive Feet 32
Figure 17: Power Inlet 32
Figure 18: Installing an Optional SFP Transceiver into a Slot 33
Figure 19: Making-Twisted-Pair Connections 36
Figure 20: Network Wiring Connections 38
Figure 21: Making Fiber Port Connections 39
Figure 22: RJ-45 Connector 45
Figure 23: Straight Through Wiring 46
Figure 24: Crossover Wiring 47

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ES-2026 / ES-2026P
TABLES
Table 1: Supported SFP Transceivers 18
Table 2: Port Status LEDs 19
Table 3: System Status LEDs 19
Table 4: Maximum 1000BASE-T Gigabit Ethernet Cable Length 40
Table 5: Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths 40
Table 6: Maximum 1000BASE-LX Gigabit Ethernet Cable Length 40
Table 7: Maximum 1000BASE-LH Gigabit Ethernet Cable Length 41
Table 8: Maximum 100BASE-FX Cable Length 41
Table 9: Maximum Fast Ethernet Cable Length 41
Table 10: Maximum Ethernet Cable Length 41
Table 11: LED Indicators 43
Table 12: 10/100BASE-TX MDI and MDI-X Port Pinouts 46
Table 13: 1000BASE-T MDI and MDI-X Port Pinouts 47
Table 14: Fiber Standards 48

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ES-2026 / ES-2026P
1INTRODUCTION
OVERVIEW
The ES-2026 and ES-2026P are Fast Ethernet Layer 2 switches with 24 10/
100BASE-TX ports, and two Small Form Factor Pluggable (SFP) transceiver
slots that operate in combination with 1000BASE-T ports 25~26 (see
Figure 1, ports 25-26).
The ES-2026P also provides PoE power to connected devices. The switches
also include an SNMP-based management agent, which provides in-band
access for managing the switch.
Both switches provide a broad range of powerful features for Layer 2
switching, delivering reliability and consistent performance for your
network traffic. They bring order to poorly performing networks by
segregating them into separate broadcast domains with IEEE 802.1Q
compliant VLANs, and empowers multimedia applications with multicast
switching and CoS services.
Figure 1: ES-2026 and ES-2026P Front Panels
Figure 2: Rear Panel
ES-2026 Port Status Indicators System Indicators
10/100 Mbps RJ-45 Ports 1000BASE-T/SFP Ports
ES-2026P Port Status Indicators System Indicators
10/100 Mbps RJ-45 PoE Ports 1000BASE-T/SFP Ports
Mode Button
AC 100-240V, 50-60Hz, 3A
Reset
Reset Button Grounding Point
Power Inlet

C HAPTER 1 | Introduction
Switch Architecture
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ES-2026 / ES-2026P
SWITCH ARCHITECTURE
These switches employ a wire-speed, non-blocking switching fabric. This
permits simultaneous wire-speed transport of multiple packets at low
latency on all ports. The switch also features full-duplex capability on all
ports, which effectively doubles the bandwidth of each connection.
The switches use store-and-forward switching to ensure maximum data
integrity. With store-and-forward switching, the entire packet must be
received into a buffer and checked for validity before being forwarded. This
prevents errors from being propagated throughout the network.
NETWORK MANAGEMENT OPTIONS
With a comprehensive array of LEDs, the switch provides “at a glance”
monitoring of network and port status. The switch can be managed over
the network with a web browser.
For a detailed description of the management features, refer to the User
Manual.
POWER-OVER-ETHERNET
All of the ES-2026P's 10/100 Mbps ports support the IEEE 802.3at-2009
PoE standard that enables DC power to be supplied to attached devices
using wires in the connecting Ethernet cable. The total PoE power delivered
by all ports cannot exceed the 185W power budget. This means that up to
five ports can supply a maximum 34.2W of power simultaneously to
connected devices, or all 24 ports can supply up to 7.7W simultaneously.
Any PoE-compliant device attached to a port can directly draw power from
the switch over the Ethernet cable without requiring its own separate
power source. This capability gives network administrators centralized
power control for devices such as IP phones and wireless access points,
which translates into greater network availability.
For each attached PoE-compliant device, the switch automatically senses
the load and dynamically supplies the required power. The switch delivers
power to a device using the wire pairs in UTP or STP cable.

C HAPTER 1 | Introduction
Description of Hardware
– 18 –
ES-2026 / ES-2026P
DESCRIPTION OF HARDWARE
10/100BASE-TX
PORTS
The switches contain 24 RJ-45 ports that operate at 10 Mbps or 100 Mbps,
half or full duplex. Because all ports on these switches support automatic
MDI/MDI-X operation, you can use straight-through cables for all network
connections to PCs or servers, or to other switches or hubs. (See
“1000BASE-T Pin Assignments”.)
Each of these ports support auto-negotiation, so the optimum transmission
mode (half or full duplex), and data rate (10, or 100 Mbps) can be selected
automatically. If a device connected to one of these ports does not support
auto-negotiation, the communication mode of that port can be configured
manually.
Each port also supports IEEE 802.3x auto-negotiation of flow control, so
the switch can automatically prevent port buffers from becoming
saturated.
SFP TRANSCEIVER
SLOTS
The Small Form Factor Pluggable (SFP) transceiver slots are shared with
Gigabit RJ-45 ports 25~26. In the default configuration, if an SFP
transceiver (purchased separately) is installed in a slot and has a valid link
on the port, the associated RJ-45 port is disabled. The switch can also be
configured to force the use of an RJ-45 port or SFP slot, as required.
The following table shows a list of transceiver types which have been
tested with the switch. For an updated list of vendors supplying these
transceivers, contact your local dealer. For information on the
recommended standards for fiber optic cabling, see “Fiber Standards”.
Table 1: Supported SFP Transceivers
Media Standard Fiber Diameter (microns) Wavelength (nm) Maximum Distancea
a. Maximum distance may vary for different SFP vendors.
1000BASE-SX 50/125 850 700 m
62.5/125 850 400 m
1000BASE-LX 50/125 1300 550 m
62.5/125 1300 550 m
9/125 1300 10 km
1000BASE-LH 9/125 1310 35 km
1550 80 km
100BASE-FX 50/125 or 62.5/125 1300 2 km
9/125 1300 20 km
1000BASE-T 100 m

C HAPTER 1 | Introduction
Description of Hardware
– 19 –
ES-2026 / ES-2026P
PORT AND SYSTEM
STATUS LEDS
These switches include a display panel for key system and port indications
that simplify installation and network troubleshooting. The LEDs, which are
located on the front panel for easy viewing, are shown below and described
in the following tables.
Figure 3: Port and System LEDs
Table 2: Port Status LEDs
LED Condition Status
Fast Ethernet Ports (Ports 1-24)
Link/Activity/Speed
(Mode button not
depressed)
On/Flashing
Amber Port has established a valid 10 Mbps network connection. Flashing indicates activity.
On/Flashing
Green Port has established a valid 100 Mbps network connection. Flashing indicates activity.
Off There is no valid link on the port.
PoE Status
(Mode button is
depressed)
On Amber A PoE device is connected.
Off No PoE device is connected.
SFP Gigabit Ethernet Ports (Ports 25-26)
(Link/Activity) On/Flashing
Amber Port has established a valid 10 or 100 Mbps network connection. Flashing indicates activity.
On/Flashing
Green Port has established a valid 1000 Mbps network connection. Flashing indicates activity.
Off There is no valid link on the port.
Table 3: System Status LEDs
LED Condition Status
PWR On Green The unit’s internal power supply is operating normally.
Off The unit has no power connected.
Diag/PoE
(Mode button not
depressed)
On Green The system diagnostic test has completed
successfully.
Flashing Green The system boot up is in progress.
On Amber The system diagnostic test is in progress.
Flashing Amber The system diagnostic test has detected a fault.
Diag/PoE
(Mode button
depressed)
On Amber Port LEDs display PoE status.
Flashing Amber Supplied PoE power has reached 95% or more of the
total system power budget.
Port LEDs System LEDs

C HAPTER 1 | Introduction
Description of Hardware
– 20 –
ES-2026 / ES-2026P
MODE BUTTON
(ES-2026P)
When the Mode button is depressed, the port LEDs display PoE information.
When the Mode button is not depressed, the port LEDs display link and
activity information.
POWER SUPPLY INLET There is one power inlet on the rear panel of the switch. The standard
power inlet is for the AC power cord.
Figure 4: Power Supply Inlet
GROUNDING POINT To prevent accidental electrical shock or damage to your switch, it is
recommended that you ground the switch to an earth point by attaching a
grounding wire (not supplied) to the grounding point located next to the
power inlet, with a metal screw. If located in a tall building, grounding
points include metal drain pipes, and other electrostatic conductive devices
that lead to the ground, or if located on the first floor of a building, the
ground outside itself.
Figure 5: Grounding Point
AC 100-240V, 50-60Hz, 3A
Power Supply Inlet
AC 100-240V, 50-60Hz, 3A
Grounding Point