Lantronix S8TB User manual

S8TB
Unmanaged Gigabit Ethernet Switch
(8) 10/100/1000Base-T Ports
User Guide
Part Number 33672
Revision C May 2022

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Intellectual Property
© 2022 Lantronix, Inc. All rights reserved. No part of the contents of this publication may be transmitted
or reproduced in any form or by any means without the written permission of Lantronix.
Lantronix is a registered trademark of Lantronix, Inc. in the United States and other countries. All other
trademarks and trade names are the property of their respective holders.
Patented: https://www.lantronix.com/legal/patents/; additional patents pending.
Warranty
For details on the Lantronix warranty policy, please go to our web site at
http://www.lantronix.com/support/warranty.
Contacts
Lantronix Corporate Headquarters
7535 Irvine Center Drive
Suite100
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
Technical Support
Phone: [phone] or 1.800.260.1312
Email: https://www.lantronix.com/technical-support/
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at
www.lantronix.com/about/contact.
Disclaimer
All information contained herein is provided “AS IS.” Lantronix undertakes no obligation to update the information
in this publication. Lantronix does not make, and specifically disclaims, all warranties of any kind (express, implied
or otherwise) regarding title, non-infringement, fitness, quality, accuracy, completeness, usefulness, suitability or
performance of the information provided herein. Lantronix shall have no liability whatsoever to any user for any
damages, losses and causes of action (whether in contract or in tort or otherwise) in connection with the user’s
access or usage of any of the information or content contained herein. The information and specifications
contained in this document are subject to change without notice.
Revision History
Date
Rev
Comments
12/14/15 A Initial release.
4/1/20 B Add S8TB photo, DoC, and port layout; update MAC Table and Memory Buffer capacity
specs.
5/6/22 C Initial Lantronix re-brand. Update DoC and contact information to Lantronix information.

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Safety Warnings and Cautions
These products are not intended for use in life support products where failure of a product could reasonably be
expected to result in death or personal injury. Anyone using this product in such an application without express
written consent of an officer of Lantronix does so at their own risk and agrees to fully indemnify Lantronix for any
damages that may result from such use or sale.
Attention: This product, like all electronic products, uses semiconductors that can be damaged by ESD
(electrostatic discharge). Always observe appropriate precautions when handling.
Note: Emphasizes important information or calls your attention to related features or instructions.
Caution: Alerts you to a potential hazard that could cause loss of data or damage the system or
equipment.
Warning: Alerts you to a potential hazard that could cause personal injury.

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Contents
Safety Warnings and Cautions................................................................................................................................3
1Product Description ..........................................................................................................................................5
Features ..................................................................................................................................................................5
Package Contents...................................................................................................................................................5
2Hardware Description .......................................................................................................................................6
LED Indicators.........................................................................................................................................................6
LED Indicator Descriptions..................................................................................................................................6
Power Cord Included...............................................................................................................................................6
Power On ................................................................................................................................................................6
3Troubleshooting ................................................................................................................................................7
Incorrect Connections .............................................................................................................................................7
Diagnosing LED Indicators .....................................................................................................................................7
Labeling...................................................................................................................................................................7
4Technical Specifications...................................................................................................................................8
5Regulatory Compliance Information ...............................................................................................................9
Regulatory Approvals..............................................................................................................................................9
Canadian EMI Notice ..........................................................................................................................................9
European Notice..................................................................................................................................................9
FCC Regulations .................................................................................................................................................9
Canadian Regulations .........................................................................................................................................9
European Regulations ...................................................................................................................................... 10
Declaration of Conformity .................................................................................................................................... 10

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1 Product Description
This (8) 10/100/1000Base-T port switch with Auto-MDI/MDIX is an unmanaged multi-port switch that can be used
to build high-performance switched networks. This switch is a store-and-forward device that offers low latency for
high speed networking. It is designed for the core of the network backbone computing environment to solve traffic
block problems at SME (small, medium enterprise) businesses.
Features
•Conforms to IEEE 802.3, 802.3u. 802.3ab, 802.3az, and 802.3x
•8 10/100/1000 Base-T RJ-45 Ethernet ports
•Auto-MDIX on all ports
•N-Way Auto-Negotiation supported
•Store-and-Forward switching architecture
•Backplane Bandwidth 16 Gbps
•Embedded 192k bytes memory buffer
•4K MAC address table
•Up to 9K byte Jumbo Frame
•Small Form Factor
•Internal Power Supply
•Supports full and half-duplex for 10/100Mbps and full-duplex for 1000Mbps
•Wire-speed packet filtering and forwarding rate
•Supports IEEE 802.3az energy efficient Ethernet
Package Contents
Unpack the contents of the S8TB packaging and verify the checklist below.
•One S8TB Switch
•One Country specific Power cord
•One Documentation Post card
•Four Rubber Feet
•Four Sponges
•One Wall Mount Kit (two brackets + 8 screws)
Compare the contents of your S8TB package with the standard checklist above. If any item is missing or
damaged, please contact your local dealer for service. Save the packaging materials for possible future use.

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2 Hardware Description
LED Indicators
The LEDs give real-time information of system operating status as shown and described below.
Front Panel
LED Indicator Descriptions
LED
Status
Description
PWR
Steady Green
Power is On
LINK/ACT
Steady Green
Port connection on 1000Mbps
Steady Amber
Port connection on 10/100Mbps
Off
Port disconnect
Back Panel
Power Cord Included
To order the corresponding country specific power cord, add the extension from the list below to the end of the
SKU: e.g., -NA = North America, -LA = Latin America, -EU = Europe, -UK = United Kingdom, -SA = South Africa,
-JP = Japan, -OZ = Australia, -BR = Brazil.
Power On
Connect the power cord to the power socket on the back panel of the switch. Connect the other side of power
cord to the power outlet. The power rating of the switch is AC voltage ranging from 100-240VAC, frequency
50~60Hz.

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3 Troubleshooting
This section is intended to help you solve the most common problems on the S8TB switch.
Incorrect Connections
Faulty or Loose Cables
Look for loose or obviously faulty connections. If they appear to be OK, make sure the connections are snug.
If that does not correct the problem, try a different cable.
Non-standard Cables
Non-standard and mis-wired cables may cause numerous network collisions and other network problems and can
seriously impair network performance. A category 5-cable tester is a recommended tool for every 100Base-TX
network installation.
RJ-45 ports: Use unshielded twisted-pair (UTP) or shield twisted-pair (STP) cable for RJ-45 connections: 100Ω
Category 3, 4 or 5 cable for 10Mbps connections or 100Ω Category 5 cable for 100Mbps connections.
Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).
Improper Network Topologies
It is important to make sure that you have a valid network topology. Common topology faults include excessive
cable length and too many repeaters (hubs) between end nodes. In addition, you should make sure that your
network topology contains no data path loops. Between any two end nodes, there should be only one active
cabling path at any time. Data path loops will cause broadcast storms that will severely impact your network
performance.
Diagnosing LED Indicators
The switch can be easily monitored through panel indicators, which describe common problems you may
encounter, to assist in identifying problems and where you can find possible solutions. See “LED Indicators” on
page 6above.
Labeling
After performing the troubleshooting steps above, and before contacting Tech Support, check the product and
packaging labels for information to provide Tech Support.
Product Label Box Label

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4 Technical Specifications
The table below lists the S8TB switch specifications.
Standards
IEEE 802.3 10BASE-T Ethernet
IEEE 802.3u 100BASE-TX Fast Ethernet
IEEE 802.3ab 1000Base-T Gigabit Ethernet
IEEE802.3x Duplex Flow Control
IEEE802.3az EEE
Protocol
CSMA/CD
Technology
Store and Forward switching architecture
Cable Connections
RJ-45 (10BASE-T): Category 3,4,5 UTP/STP
RJ-45 (100BASE-TX): Category 5 UTP/STP
RJ-45 (1000BASE-T): Category 5,5e or enhanced UTP/STP
Connectors
(8) 10/100/1000 RJ-45 ports
Network Rate
10/100/1000 Mbps Auto-negotiation
Jumbo Frames
9K Bytes
MAC Address Table
8K-entry (Rev. A)
4K-entry (Rev. B and C)
Memory Buffer
128K bytes (Rev. A)
192K bytes (Rev. B and C)
Status LEDs
(8) port LEDs speed (Green: 1000Mbps, Amber 10/100 Mbps), Link/Activity
(flashing)
Backplane
16Gbps
Case
Metal
Operating Temp.
0 deg. C to +40 deg. C (+32 deg. F to +104 deg. F)
Operating Humidity
10% to 90% (Non-condensing)
Storage Temp.
-40 deg. C to +70 deg. C (-40 deg. F to +158 deg. F)
Power Input
Internal Power: 100 - 240VAC, 50~60Hz
Power Consumption
3.5 Watts max.
Dimensions
Width: 6.3” [160 mm] x Depth: 3.94” [100 mm] x Height: 1.28” [32.5 mm]
Weight
1.35 lbs. [0.61 kg]
Warranty
Limited Lifetime Warranty

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5 Regulatory Compliance Information
Regulatory Approvals
Compliance
Safety: LVD
Emissions: FCC Class B, CE Mark,
UL Listed, CCC
EN55022 Class B
Canadian EMI Notice
This Class B digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numerique de la classe A respecte toutes les exigences du Reglement sur le materiel brouilleur du
Canada.
European Notice
Products with the CE Marking comply with both the EMC Directive (2004/108/EC) and the Low Voltage Directive
(2006/95/EC) issued by the Commission of the European Community Compliance with these directives imply
conformity to the following European Norms:
EN55022 (CISPR 22) - Radio Frequency Interference
EN60950 (IEC950) - Product Safety
CE Mark
FCC Regulations
This equipment has been tested and found to comply with the limits for a Class B 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 the user's own expense.
Canadian Regulations
This digital apparatus does not exceed the Class B limits for radio noise for digital apparatus set out on the radio
interference regulations of the Canadian Department of Communications.
Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils
numériques de la Class B prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des
Communications du Canada.

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European Regulations
Warning
This is a Class B product. In a domestic environment this product may cause radio interference in which case the user may
be required to take adequate measures.
Achtung !
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes
Rundfunkstörungen auftreten. In diesem Fäll is der Benutzer für Gegenmaßnahmen verantwortlich.
Attention !
Ceci est un produit de Classe B. Dans un environment domestique, ce produit risque de créer des interférences
radioélectriques, il appartiendra alors à l'utilsateur de prende les measures spécifiques appropriées.
In accordance with European Union Directive 2002/96/EC of the European Parliament and of the Council of
27 January 2003, Lantronix will accept post usage returns of this product for proper disposal. The contact
information for this activity can be found in the 'Contact Us' portion of this document.
CAUTION: RJ connectors are NOT INTENDED FOR CONNECTION TO THE PUBLIC TELEPHONE NETWORK.
Failure to observe this caution could result in damage to the public telephone network.
Der Anschluss dieses Gerätes an ein öffentlickes Telekommunikationsnetz in den EGMitgliedstaaten
verstösst gegen die jeweligen einzelstaatlichen Gesetze zur Anwendung der Richtlinie 91/263/EWG zur Angleichung der
Rechtsvorschriften der Mitgliedstaaten über Telekommunikationsendeinrichtungen einschliesslich der gegenseitigen
Anerkennung ihrer Konformität.
Declaration of Conformity
Manufacture’s Name: Lantronics, Inc.
Manufacture’s Address: 7535 Irvine Center Drive, Suite 100, Irvine, California 92618
Declares that the products: S8TB Unmanaged Gigabit Ethernet Switch
Conforms to the following Product Regulations:
FCC Part 15 Class B, EN 55032:2012, EN 55024:2010
Directive 2014/30/EU
Low-Voltage Directive 2014/35/EU
IEC /EN 60950-1:2006+A2:2013
2011/65/EU EN 50581:2012
With the technical construction on file at the above address, this product carries the CE Mark.
I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s) and
Standard(s).
Place: Irvine, California
Date: May 4, 2022
Signature: Fathi Hakam
Full Name: Fathi Hakam
Position: Vice President of Engineering

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Lantronix Corporate Headquarters
7535 Irvine Center Drive
Suite100
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
Technical Support
Online: https://www.lantronix.com/technical-support/.
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at
www.lantronix.com/about/contact.