D-Link xStack DES-3528P Series Manual

®
Hardware Installation Guide
Product Model: xStack®DES-3528/DES-3552 Series
Layer 2 Managed Stackable Fast Ethernet Switch
Release 2.0

©Copyright 2009. All rights reserved.
_________________________________________________________________________________
Information in this document is subject to change without notice.
© 2009 D-Link Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of D-Link Corporation is strictly forbidden.
Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Corporation; Microsoft and Windows are registered trademarks
of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products.
D-Link Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
July 2009 P/N 651ES3500055G

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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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 this 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 their 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.
Warnung!
Dies ist ein Produkt der Klasse A. Im Wohnbereich kann dieses Produkt Funkstoerungen verursachen. In diesem Fall kann vom Benutzer verlangt
werden, angemessene Massnahmen zu ergreifen.
Precaución!
Este es un producto de Clase A. En un entorno doméstico, puede causar interferencias de radio, en cuyo case, puede requerirse al usuario para
que adopte las medidas adecuadas.
Attention!
Ceci est un produit de classe A. Dans un environnement domestique, ce produit pourrait causer des interférences radio, auquel cas l`utilisateur
devrait prendre les mesures adéquates.
Attenzione!
Il presente prodotto appartiene alla classe A. Se utilizzato in ambiente domestico il prodotto può causare interferenze radio, nel cui caso è possibile
che l`utente debba assumere provvedimenti adeguati.
VCCI Warning
この装置は、クラス A情報技術装置です。この装置を家庭環境で使用すると電波妨害を引き起こすことがあります。
この場合には使用者が適切な対策を講ずるよう要求されることがあります。 VCCI-A

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Table of Contents
Intended Readers............................................................................................................................................................................ v
Typographical Conventions ............................................................................................................................................................................v
Notes, Notices, and Cautions ......................................................................................................................................................... v
Safety Instructions......................................................................................................................................................................... vi
Safety Cautions..............................................................................................................................................................................................vi
General Precautions for Rack-Mountable Products.......................................................................................................................................vii
Protecting Against Electrostatic Discharge................................................................................................................................................. viii
Introduction......................................................................................................................................................1
Gigabit Ethernet Technology..........................................................................................................................................................................1
Switch Description..........................................................................................................................................................................................1
Features...........................................................................................................................................................................................................2
Ports................................................................................................................................................................................................................3
Front-Panel Components.................................................................................................................................................................................4
LED Indicators................................................................................................................................................................................................5
Rear Panel Description....................................................................................................................................................................................9
Side Panel Description....................................................................................................................................................................................9
Gigabit Combo Ports.....................................................................................................................................................................................10
Installation......................................................................................................................................................12
Package Contents..........................................................................................................................................................................................12
Before You Connect to the Network.............................................................................................................................................................12
Installing the Switch without the Rack..........................................................................................................................................................13
Installing the Switch in a Rack......................................................................................................................................................................13
Mounting the Switch in a Standard 19" Rack................................................................................................................................................14
Power On (AC Power)..................................................................................................................................................................................14
Power Failure (AC Power)............................................................................................................................................................................14
Connecting DC Power to the DES-3528DC..................................................................................................................................................15
Connecting the Switch...................................................................................................................................16
Switch to End Node ......................................................................................................................................................................................16
Switch to Hub or Switch ...............................................................................................................................................................................16
Connecting To Network Backbone or Server................................................................................................................................................17
Introduction to Switch Management ...........................................................................................................18
Management Options................................................................................................................................................................... 18
Web-based Management Interface................................................................................................................................................................18
SNMP-based Management............................................................................................................................................................................18
Connecting the Console Port (RS-232 DCE)................................................................................................................................................18
First Time Connecting to the Switch.............................................................................................................................................................20
Password Protection......................................................................................................................................................................................20
SNMP Settings..............................................................................................................................................................................................21
IP Address Assignment.................................................................................................................................................................................22
Web-based Switch Configuration.................................................................................................................24

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Introduction.................................................................................................................................................................................. 24
Login to Web Manager .................................................................................................................................................................................24
Web-based User Interface.............................................................................................................................................................................25
Web Pages.....................................................................................................................................................................................................26
Technical Specifications ................................................................................................................................27
Cable Lengths.................................................................................................................................................34
Glossary ..........................................................................................................................................................35
Warranties and Tech Support Information................................................................................................38

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Intended Readers
The DES-3528/DES-3552 Switch Series Hardware Installation Guide contains information for setup and
management of the Switch. This manual is intended for network managers familiar with network management
concepts and terminology.
Typographical Conventions
Convention Description
[ ] In a command line, square brackets indicate an optional entry. For example: [copy
filename] means that optionally you can type copy followed by the name of the file. Do not
type the brackets.
Bold font Indicates a button, a toolbar icon, menu, or menu item. For example: Open the File menu
and choose Cancel. Used for emphasis. May also indicate system messages or prompts
appearing on your screen. For example: You have mail. Bold font is also used to
represent filenames, program names and
commands. For example: use the copy
command.
Boldface Typewriter
Font Indicates commands and responses to prompts that must be typed exactly as printed in
the manual.
Initial capital letter Indicates a window name. Names of keys on the keyboard have initial capitals. For
example: Click Enter.
Italics Indicates a window name or a field. Also can indicate a variables or parameter that is
replaced with an appropriate word or string. For example: type filename means that you
should type the actual filename instead of the word shown in italic.
Menu Name > Menu
Option Menu Name > Menu Option Indicates the menu structure. Device > Port > Port
Properties means the Port Properties menu option under the Port menu option that is
located under the Device menu.
Notes, Notices, and Cautions
A NOTE indicates important information that helps you make better use of your device.
A NOTICE indicates either potential damage to hardware or loss of data and tells you
how to avoid the problem.
A CAUTION indicates a potential for property damage, personal injury, or death.

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Safety Instructions
Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential
damage. Throughout this document, the caution icon ( ) is used to indicate cautions and precautions that you need
to review and follow.
Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire and damage to the equipment, observe the following
precautions.
•Observe and follow service markings. Do not service any product except as explained in your system
documentation. Opening or removing covers that are marked with the triangular symbol with a lightning bolt
may expose you to electrical shock. Only a trained service technician should service components inside these
compartments.
•If any of the following conditions occur, unplug the product from the electrical outlet and replace the part or
contact your trained service provider:
The power cable, extension cable, or plug is damaged.
An object has fallen into the product.
The product has been exposed to water.
The product has been dropped or damaged.
The product does not operate correctly when you follow the operating instructions.
•Keep your system away from radiators and heat sources. Also, do not block cooling vents.
•Do not spill food or liquids on your system components, and never operate the product in a wet environment.
If the system gets wet, see the appropriate section in your troubleshooting guide or contact your trained
service provider.
•Do not push any objects into the openings of your system. Doing so can cause fire or electric shock by
shorting out interior components.
•Use the product only with approved equipment.
•Allow the product to cool before removing covers or touching internal components.
•Operate the product only from the type of external power source indicated on the electrical ratings label. If you
are not sure of the type of power source required, consult your service provider or local power company.
•To help avoid damaging your system, be sure the voltage on the power supply is set to match the power
available at your location:
115 volts (V)/60 hertz (Hz) in most of North and South America and some Far Eastern countries
100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan
230 V/50 Hz in most of Europe, the Middle East, and the Far East
48VDC for DES-3528DC
•Also, be sure that attached devices are electrically rated to operate with the power available in your location.
•Use only approved power cable(s). If you have not been provided with a power cable for your system or for
any AC-powered option intended for your system, purchase a power cable that is approved for use in your
country. The power cable must be rated for the product and for the voltage and current marked on the
product's electrical ratings label. The voltage and current rating of the cable should be greater than the ratings
marked on the product.

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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•To help prevent electric shock, plug the system and peripheral power cables into properly grounded electrical
outlets. These cables are equipped with three-prong plugs to help ensure proper grounding. Do not use
adapter plugs or remove the grounding prong from a cable. If you must use an extension cable, use a 3-wire
cable with properly grounded plugs.
•Observe extension cable and power strip ratings. Make sure that the total ampere rating of all products
plugged into the extension cable or power strip does not exceed 80 percent of the ampere ratings limit for the
extension cable or power strip.
•To help protect your system from sudden, transient increases and decreases in electrical power, use a surge
suppressor, line conditioner, or uninterruptible power supply (UPS).
•Position system cables and power cables carefully; route cables so that they cannot be stepped on or tripped
over. Be sure that nothing rests on any cables.
•Do not modify power cables or plugs. Consult a licensed electrician or your power company for site
modifications. Always follow your local/national wiring rules.
•When connecting or disconnecting power to hot-pluggable power supplies, if offered with your system,
observe the following guidelines:
Install the power supply before connecting the power cable to the power supply.
Unplug the power cable before removing the power supply.
If the system has multiple sources of power, disconnect power from the system by unplugging all power
cables from the power supplies.
•Move products with care; ensure that all casters and/or stabilizers are firmly connected to the system. Avoid
sudden stops and uneven surfaces.
General Precautions for Rack-Mountable Products
Observe the following precautions for rack stability and safety. Also, refer to the rack installation documentation
accompanying the system and the rack for specific caution statements and procedures.
•Systems are considered to be components in a rack. Thus, "component" refers to any system as well as to
various peripherals or supporting hardware.
•Before working on the rack, make sure that the stabilizers are secured to the rack, extended to the floor, and
that the full weight of the rack rests on the floor. Install front and side stabilizers on a single rack or front
stabilizers for joined multiple racks before working on the rack.
•Always load the rack from the bottom up, and load the heaviest item in the rack first.
•Make sure that the rack is level and stable before extending a component from the rack.
•Use caution when pressing the component rail release latches and sliding a component into or out of a rack;
the slide rails can pinch your fingers.
•After a component is inserted into the rack, carefully extend the rail into a locking position, and then slide the
component into the rack.
•Do not overload the AC supply branch circuit that provides power to the rack. The total rack load should not
exceed 80 percent of the branch circuit rating.
•Ensure that proper airflow is provided to components in the rack.
•Do not step on or stand on any component when servicing other components in a rack.

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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NOTE: A qualified electrician must perform all connections to DC power and to safety grounds.
All electrical wiring must comply with applicable local, regional or national codes and practices.
CAUTION: Never defeat the ground conductor or operate the equipment in the absence of a
suitably installed ground conductor. Contact the appropriate electrical inspection authority or an
electrician if you are uncertain that suitable grounding is available.
CAUTION: The system chassis must be positively grounded to the rack cabinet frame. Do not
attempt to connect power to the system until grounding cables are connected. A qualified
electrical inspector must inspect completed power and safety ground wiring. An energy hazard
will exist if the safety ground cable is omitted or disconnected.
Protecting Against Electrostatic Discharge
Static electricity can harm delicate components inside your system. To prevent static damage, discharge static
electricity from your body before you touch any of the electronic components, such as the microprocessor. You can do
so by periodically touching an unpainted metal surface on the chassis.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
1. When unpacking a static-sensitive component from its shipping carton, do not remove the component from
the antistatic packing material until you are ready to install the component in your system. Just before
unwrapping the antistatic packaging, be sure to discharge static electricity from your body.
2. When transporting a sensitive component, first place it in an antistatic container or packaging.
3. Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads, workbench pads
and an antistatic grounding strap.

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Section 1
Introduction
Gigabit Ethernet Technology
Switch Description
Features
Ports
Front-Panel Components
LED Indicators
Rear Panel Description
Side Panel Description
Gigabit Combo Ports
The DES-3528/DES-3552 Series are layer 2 Fast Ethernet switches and members of the D-Link xStack®family.
Ranging from 10/100Mbps edge switches to core gigabit switches, the xStack®switch family has been future-proof
designed to provide a stacking architecture with fault tolerance, flexibility, port density, robust security and maximum
throughput with a user-friendly management interface for the networking professional.
The following manual describes the installation, maintenance and configurations concerning the xStack®DES-3528,
DES-3528DC, DES-3528P, DES-3552 and DES-3552P switches. Please take note that if this device was purchased
outside of Europe, certain cosmetic differences between the actual switch and images in this document will be
apparent to the reader, such as the faceplate and the manual cover. The DES-3528/DES-3552 Series has already
joined the xStack®family for the European market and is soon to be xStack®converted, universally. Changes are
made to the appearance of the device only and no configuration or internal hardware alterations occur.
NOTE: For the remainder of this manual, all versions of the DES-3528, DES-3528P, DES-
3528DC, DES-3552 and DES-3552P switches will be referred to as simply the Switch or the
DES-3528.
Gigabit Ethernet Technology
Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for full
duplex, flow control, and management objects, but with a tenfold increase in theoretical throughput over 100Mbps
Fast Ethernet and a one hundred-fold increase over 10Mbps Ethernet. Since it is compatible with all 10Mbps and
100Mbps Ethernet environments, Gigabit Ethernet provides a straightforward upgrade without wasting a company's
existing investment in hardware, software, and trained personnel.
The increased speed and extra bandwidth offered by Gigabit Ethernet are essential to coping with the network
bottlenecks that frequently develop as computers and their busses get faster and more users using applications that
generate more traffic. Upgrading key components, such as your backbone and servers to Gigabit Ethernet can greatly
improve network response times as well as significantly speed up the traffic between your sub networks.
Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and similar
data-intensive applications. Likewise, since data transfers occur 10 times faster than Fast Ethernet, servers outfitted
with Gigabit Ethernet NIC's are able to perform 10 times the number of operations in the same amount of time.
In addition, the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost-effective method to take
advantage of today and tomorrow's rapidly improving switching and routing internetworking technologies.
Switch Description
The DES-3528/DES-3552 Switch Series is equipped with unshielded twisted-pair (UTP) cable ports providing
dedicated 10 or 100 Mbps bandwidth. The Switch has 24/48 UTP ports and Auto MDI-X/MDI-II convertible ports that
can be used for uplinking to another switch. These ports can be used for connecting PCs, printers, servers, hubs,

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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routers, switches and other networking devices. The dual speed ports use standard twisted-pair cabling and are ideal
for segmenting networks into small, connected sub networks for superior performance. Each 10/100 port can support
up to 200 Mbps of throughput in full-duplex mode.
In addition, the Switch has 2 SFP combo ports. These two-gigabit combo ports are ideal for connecting to a server or
network backbone. This stackable Switch enables the network to use some of the most demanding multimedia and
imaging applications concurrently with other user applications without creating bottlenecks. The built-in console
interface can be used to configure the Switch's settings for priority queuing, VLANs, and port trunk groups, port
monitoring, and port speed.
Features
•IEEE 802.3 10BASE-T compliant
•IEEE 802.3u 100BASE-TX compliant
•IEEE 802.1p Priority Queues
•IEEE 802.3x flow control in full duplex mode
•IEEE 802.3ad Link Aggregation Control Protocol
support.
•IEEE 802.1X Port-based and MAC-based Access
Control
•IEEE 802.1Q VLAN
•IEEE 802.1D Spanning Tree, IEEE 802.1W Rapid
Spanning Tree and IEEE 802.1s Multiple Spanning
Tree support
•Access Control List (ACL) support
•Single IP Management support
•Access Authentication Control utilizing TACACS,
XTACACS and TACACS+
•Dual Image Firmware
•Simple Network Time Protocol support
•MAC Notification support
•Asymmetric VLAN support
•System and Port Utilization support
•System Log Support
•Support port-based enable and disable
•Address table: Supports up to 16K MAC addresses
per device
•Supports a packet buffer of up to 1 Mbyte
•Supports Port-based VLAN Groups
•Port Trunking with flexible load distribution and fail-
over function
•IGMP Snooping support
•SNMP support
•Secure Sockets Layer (SSL) and Secure Shell
(SSH) support
•Port Mirroring support
•MIB support for:
•RFC1213 MIB II
•RFC1493 Bridge
•RFC1907 SNMPv2 MIB
•RFC1757, 2819 RMON
•RFC2021 RMONv2
•RFC1643, 2358, 2665 Ether-like MIB
•RFC2233, 2863 Interface MIB
•Private MIB
•RFC2674 for 802.1p
•RFC2618 RADIUS Authentication Client
•RFC2620 RADIUS Accounting Client
•RFC2925 Ping & Traceroute
•IEEE 802.1X MIB
•RS-232 DCE console port for Switch management
•Provides parallel LED display for port status such as
link/act, speed, etc.
•High performance switching engine performs forwarding and filtering at full wire speed, maximum 14, 881 packets/sec on
each 10Mbps Ethernet port, and maximum 148,810 packet/sec on 100Mbps Fast Ethernet port.
•Full- and half-duplex for both 10Mbps and 100Mbps connections. Full duplex allows the switch port to simultaneously
transmit and receive data. It only works with connections to full-duplex-capable end stations and switches. Connections to a
hub must take place at half-duplex
•Support broadcast storm filteringF
•Non-blocking store and forward switching scheme capability to support rate adaptation and protocol conversion
•Supports by-port Egress/Ingress rate control.
•Supports IP-MAC Port Binding.
•Efficient self-learning and address recognition mechanism enables forwarding rate at wire speed
•Supports STP Loopback Detection
•Safeguard Engine Support

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Ports
The following table lists the relative ports that are present within each switch:
Device Features DES-3528 DES-3528DC DES-3528P DES-3552 DES-3552P
10/100BASE-T Ports 24 Ports 24 Ports 24 Ports 48 Ports 48 Ports
PoE Function Alternative A N/A N/A 24 Ports N/A 48 Ports
1000Base-T/SFP Combo
Ports 2 Ports 2 Ports 2 Ports 2 Ports 2 Ports
1000Base-T Ports 2 Ports 2 Ports 2 Ports 2 Ports 2 Ports
DCE RS-232 DB-9 Console
Port One Female One Female One Female One Female One Female
The following table lists the features and compatibility for each type of port present in the DES-3528/DES-
3528DC/DES-3528P/DES-3552/DES-3552P.
10/100 BASE-T SFP 1000BASE-T
IEEE 802.3 compliant
IEEE 802.3u compliant
IEEE 802.3x flow control support in
full-duplex
IEEE 802.3af compliant (DES-
3528P/DES-3552P only)
Auto MDI-X/MDI-
II cross over
support
SFP Transceivers Supported:
DEM-310GT (1000BASE-LX)
DEM-311GT (1000BASE-SX)
DEM-314GT (1000BASE-LHX)
DEM-315GT (1000BASE-ZX)
DEM-312GT2 (1000BASE-SX)
DEM-210 (Single Mode 100BASE-
FX)
DEM-211 (Multi Mode 100BASE-
FX)
WDM Transceiver Supported:
DEM-330T (TX-1550/RX-1310nm),
up to 10km,Single-Mode
DEM-330R (TX-1310/RX-1550nm),
up to 10km,Single-Mode
DEM-331T (TX-1550/RX-1310nm),
up to 40km, Single-Mode
DEM-331R (TX-1310/RX-1550nm),
up to 40km, Single-Mode
Compliant to the following
standards:
1.IEEE 802.3z compliance
2.IEEE 802.3u compliance
IEEE 802.3 compliant
IEEE 802.3u compliant
IEEE 802.3ab compliant
IEEE 802.3z compliant
IEEE 802.3x flow control support in
full-duplex
NOTE: The SFP combo ports on the Switch cannot be used simultaneously with the
corresponding 1000BASE-T ports. If both ports are in use at the same time (ex. port 25
of the SFP and port 25 of the 1000BASE-T), the SFP ports will take priority over the
combo ports and render the 1000BASE-T ports inoperable.

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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NOTE: For customers interested in D-View, D-Link Corporation's proprietary SNMP
management software, go to the D-Link Website (www.dlink.com) and download the
software and manual.
Front-Panel Components
DES-3528
•Twenty-four 10/100Mbps BASE-T ports
•Two Combo 1000BASE-T/SFP ports located to the right
•Two 1000BASE-T ports located to the rear
•One female DCE RS-232 DB-9 console port
•LEDs for Power, Console, RPS, Master, Link/Act/Speed for each port
Figure 1- 1. Front Panel View of the DES-3528 switch
DES-3528P
•Twenty-four 10/100Mbps BASE-T ports
•Two Combo 1000BASE-T/SFP ports located to the right
•Two 1000BASE-T ports located to the rear
•One female DCE RS -232 DB-9 console port
•One PoE Select Button
•LEDs for Power, Console, RPS, MS, Link, PoE, Link/Act/Speed for each port
Figure 1- 2. Front Panel View of the DES-3528P switch
DES-3528DC
•Twenty-four 10/100Mbps BASE-T ports
•Two Combo 1000BASE-T/SFP ports located to the right
•Two 1000BASE-T ports located to the rear
•One female DCE RS-232 DB-9 console port
•LEDs for Power, Console, Master, Link/Act/Speed for each port
Figure 1- 3. Front Panel View of the DES-3528DC switch
DES-3552
•Forty-eight 10/100Mbps BASE-T ports
•Two Combo 1000BASE-T/SFP ports located to the right

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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•Two 1000BASE-T ports located to the rear
•One female DCE RS -232 DB-9 console port
•LEDs for Power, Console, RPS, Master, Link/Act/Speed for each port
Figure 1- 4. Front Panel View of the DES-3552 switch
DES-3552P
•Forty-eight 10/100Mbps BASE-T ports
•Two Combo 1000BASE-T/SFP ports located to the right
•Two 1000BASE-T ports located to the rear
•One female DCE RS -232 DB-9 console port
•One PoE Select Button
•LEDs for Power, Console, RPS, MS, Link, PoE, Link/Act/Speed for each port
Figure 1- 5. Front Panel View of the DES-3552P switch
LED Indicators
The Switch supports LED indicators for Power, Console, RPS, Master (on DES-3528P and DES-3552P, this LED is
for MS) and Port LEDs. The following shows the LED indicators for the DES-3528/DES-3552 switch series along with
an explanation of each indicator. LEDs and their corresponding meanings are displayed below.
Figure 1- 6. LED Indicators on DES-3528 switch
Figure 1- 7. LED Indicators on DES-3552 switch
Figure 1- 8. LED Indicators on DES-3528DC switch

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Figure 1- 9. LED Indicators on DES-3528P switch
Figure 1- 10. LED Indicators on DES-3552P switch

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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LED indicators for DES-3528/DES-3528DC/DES-3552/DES-3528P/DES-3552P
Location LED Indicative Color Status Description
Per Device
Power Green Solid Light Power On
Light off Power Off
Console Green
Solid Light Console on
Blinking POST is in progress.
Light off Console off
RPS (Not for DES-
3528DC) Green Solid Light RPS is in Use
Light Off RPS Off
Master(MS) Green
Solid Light When the device is the stacking
master.
Light off Not the Stacking Master.
Stacking ID Green Capable 1-8
The Box ID is assigned either by the
user (static mode) or by the system
(automatic mode). When the box
becomes a primary master the 7
segments work bi-functionally. The box
ID and “H” indicate the primary Master
and the display on other switches will
be shown in turn. That is boxID- > H ->
boxID -> H…
Mode Select Button
(DES-3528P and DES-
3552P only)
Link/Act/Speed Green Solid Light Link/Act/Speed Mode
PoE Green Solid Light PoE Mode
LED Per 10/100 Mbps Port
Link/Act/Speed Green/Amber
Solid Green
When there is a secure 100Mbps Fast
Ethernet connection (or link) at any of
the ports.
Blinking Green When there is reception or transmission
(i.e. Activity—
Act) of data occurring at a
Fast Ethernet connected port.
Solid Amber When t
here is a secure 10Mbps
Ethernet connection (or link) at any of
the ports.
Blinking Amber When there is reception or transmission
(i.e. Activity—
Act) of data occurring at
an Ethernet connected port.
Light off No link
PoE (DES-3528P
and DES-3552P
only) Green Solid Green Power device is connected.
Blinking Port has detected an error condition.

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Light off
Power device may receive power from
an AC power source or no
802.3af/802.3at PD is found.
LED Per GE Port Link/Act/Speed Green/Amber
Solid Green
When there is a secure 1000Mbps
connection (or link) at any of the ports.
Blinking Green When there is reception or transmission
(i.e. Activity--
Act) of data occurring at a
1000Mbps connected port.
Solid Amber When there is a secure 10/100Mb
ps
Fast Ethernet connection (or link) at
any of the ports.
Blinking Amber When there is reception or transmission
(i.e. Activity—
Act) of data occurring at a
10/100Mbps Fast Ethernet connected
port.
Light off No link
LED per SFP Port Link/Act/Speed Green/Amber
Solid Green
When there is a secure 1000Mbps
connection (or link) at the ports.
Blinking Green When there is reception or transmission
(i.e. Activity--
Act) of data occurring at a
1000Mbps connected port.
Solid Amber When there is a secu
re 100Mbps
connection (or link) at any of the ports.
Blinking Amber When there is reception or transmission
(i.e. Activity—
Act) of data occurring at a
100Mbs connected ports.
Light off No link

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Rear Panel Description
The DES-3528 rear panel contains ports 27 and 28, (1000BASE-T), an AC power connector, and an outlet for an
optional external RPS.
Figure 1- 11. Rear panel view of the DES-3528
The DES-3528P rear panel contains ports 27 and 28, (1000BASE-T), an AC power connector, and an outlet for an
optional external RPS.
Figure 1- 12. Rear panel view of the DES-3528P
The DES-3552 rear panel contains ports 51 and 52, (1000BASE-T), RS-232 DCE Diagnostic port (console port), an
AC power connector, and an outlet for an optional external RPS.
Figure 1- 13. Rear panel view of the DES-3552
The DES-3528P rear panel contains ports 51 and 52, (1000BASE-T), RS-232 DCE Diagnostic port (console port), an
AC power connector, and an outlet for an optional external RPS.
Figure 1- 14. Rear panel view of the DES-3552P
The AC power connector is a standard three-pronged connector that supports the power cord. Plug-in the female
connector of the provided power cord into this socket, and the male side of the cord into a power outlet. The Switch
automatically adjusts its power setting to any supply voltage in the range from 100 ~ 240 VAC at 50 ~ 60 Hz.
The rear panel also includes an outlet for an optional external power supply. When power fails, the optional external
RPS will take over all the power immediately and automatically.
The rear panel of the DES-3528DC includes ports 27 and 28, (1000BASE-T), and an opening designed to
accommodate the DC power wiring assembly. See the installation instructions in Section 2 for details.
Figure 1- 15. Rear panel view of the DES-3528DC
Side Panel Description
The left and right-hand panel of the DES-3528 and DES-3528DC Switches contain a heat vent. The heat vents are
used to dissipate heat. Do not block these openings, and leave at least 6 inches of space at the rear and sides of the

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Switch for proper ventilation. Be reminded that without proper heat dissipation and air circulation, system components
might overheat, which could lead to system failure.
Figure 1- 16. Side panels of the DES-3528/DES-3528DC
The right-hand side panel of the DES-3552 and DES-3528P Switches contain two system fans and ventilation along
the entire right side. The left hand panel includes a heat vent. The system fans are used to dissipate heat. Do not
block these openings on either side of the Switch. Leave at least 6 inches of space at the rear and sides of the Switch
for proper ventilation. Be reminded that without proper heat dissipation and air circulation, system components might
overheat, which could lead to system failure.
Figure 1- 17. Side panels of the DES-3552/DES-3528P
The right-hand side panel of the DES-3552P Switch contains three system fans and ventilation along the entire right
side. The left hand panel includes a heat vent. The system fans are used to dissipate heat. Do not block these
openings on either side of the Switch. Leave at least 6 inches of space at the rear and sides of the Switch for proper
ventilation. Be reminded that without proper heat dissipation and air circulation, system components might overheat,
which could lead to system failure.
Figure 1- 18. Side panels of the DES-3552P
Gigabit Combo Ports
In addition to the 24/48 10/100 Mbps ports, the Switch features two Gigabit Ethernet Combo ports. These two ports
are 1000BASE-T copper ports (provided) and SFP ports (optional). See the diagram below to view the two SFP port
modules being plugged into the Switch. Please note that although these two front panel modules can be used
simultaneously. At the same time, only one copper port or one SFP port can link up for each combo port. The SFP
port will always have the highest priority.

xStack®DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Figure 1- 19. Inserting the SFP modules into the DES-3528/DES-3528P/DES-3528DC/DES-3552/DES-3552P
Figure 1-20. Installing the SFP Module