All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
Allied Telesis and the Allied Telesis logo are trademarks of Allied Telesis, Incorporated. All other product names, company
names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners
Electrical Safety and Emissions Standards
This product meets the following standards.
U.S. Federal Communications Commission
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15
of 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 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.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate
this equipment.
Industry Canada
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
European Union Restriction of the Use of Certain Hazardous Substances
(RoHS) in Electrical and Electronic Equipment
This Allied Telesis RoHS-compliant product conforms to the European Union Restriction of the Use of Certain Hazardous
Substances (RoHS) in Electrical and Electronic Equipment. Allied Telesis ensures RoHS conformance by requiring
supplier Declarations of Conformity, monitoring incoming materials, and maintaining manufacturing process controls.
RFI EmissionsFCC Class A
CISPR 22 Class A
EN55022 Class A: 2006+A1:2007 version
Warning: In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
ImmunityEN55024
Electrical SafetyUL – USA (UL60950-1)
LVD (EN60950-1, 2nd edition)
CSA or cUL – Canada
C-Tick – Australia
CE Mark
3
Translated Safety Statements
Important: The indicates that a translation of the safety statement is available in a PDF
document titled “Translated Safety Statements” on the Allied Telesis website at http://www.alliedtelesis.com/support.
Selecting a Site for the Switch ................................................................................................................... 27
Planning the Installation ............................................................................................................................. 28
Unpacking the Switch................................................................................................................................. 29
Installing the Switch on a Table or Desktop ............................................................................................... 30
Installing the Switch on a Wall ................................................................................................................... 32
Installing the Switch in a Rack ................................................................................................................... 35
Power Specifications.................................................................................................................................. 40
Safety and Electromagnetic Emissions Certifications ................................................................................ 41
RJ-45 Twisted Pair Port Connectors.......................................................................................................... 42
5
Contents
6
Figures
Figure 1. Front Panels .........................................................................................................................................................16
Figure 2. Back Panels .........................................................................................................................................................16
Figure 4. Port LEDs .............................................................................................................................................................19
Figure 5. Attaching the Rubber Feet ...................................................................................................................................30
Figure 6. Connecting the AC Power Connector to Switch ...................................................................................................31
Figure 7. Attaching the brackets to the sides of the switch..................................................................................................32
Figure 8. Attaching the switch to the wall ............................................................................................................................33
Figure 9. Removing the Feet ...............................................................................................................................................35
Figure 11. Rack Mounting the Switch..................................................................................................................................36
Figure 12. RJ-45 Connector and Port Pin Layout................................................................................................................42
Table 3. System and Port LEDs .........................................................................................................................................20
Table 4. Twisted Pair Cabling and Distances .....................................................................................................................28
Table 5. MDI Pin Signals (10Base-T or 100Base-TX) ........................................................................................................42
Table 6. MDI-X Pin Signals (10Base-T or 100Base-TX) ....................................................................................................42
This guide contains instructions on how to install the AT-GS900/16 and
AT-GS900/24 Gigabit Ethernet Switches. This preface contains the
following sections:
“Safety Symbols Used in this Document” on page 12
“Contacting Allied Telesis” on page 13
11
Preface
Safety Symbols Used in this Document
This document uses the safety symbols defined in Table 1.
Table 1. Safety Symbols
SymbolMeaningDescription
CautionPerforming or omitting a specific action may
result in equipment damage or loss of data.
WarningPerforming or omitting a specific action may
result in electrical shock.
12
Contacting Allied Telesis
If you need assistance with this product, you may contact Allied Telesis
technical support by going to the Support & Services section of the Allied
Telesis web site at www.alliedtelesis.com/support. You can find links for
the following services on this page:
24/7 Online Support - Enter our interactive support
center to search for answers to your questions in our
knowledge database, check support tickets, learn
about RMAs, and contact Allied Telesis technical
experts.
USA and EMEA phone support - Select the phone
number that best fits your location and customer type.
Hardware warranty information - Learn about Allied
Telesis warranties and register your product online.
Replacement Services - Submit a Return Merchandise
Authorization (RMA) request via our interactive support
center.