Lantronix SM TAT4X Series User manual

SMxxTAT4Xx Family
SM48TAT4XA-RP
Managed Gigabit Ethernet PoE+ Switch
(48) 10/100/1000Base-T Ports + (4) 1G/10GBase-X SFP+ Ports
SM24TAT4XB
Managed Gigabit Ethernet PoE+ Switch
(24) 10/100/1000Base-T Ports + (4) 1G/10GBase-X SFP+ Ports
Install Guide
Part Number 33785
Revision F February 2023

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Intellectual Property
© 2022, 2023 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 http://www.lantronix.com/support/warranty.
Contacts
Lantronix Corporate Headquarters
48 Discovery, Suite 250
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 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
9/16/20
C
Add SM48TAT4XA-RP UL 62368-1 Certification.
6/22/22 D
FW v8.50.0030: modify name "Non-stop PoE" to "Always-On PoE” and add "Always-On
PoE" in mib. LLDP: When switch receives a packet with LLDP-MED, it sends an IEEE802.3
MAC/ PHY packet with two config/status TLVs. When port speed is 10/100Mbps, IEEE802.3
MAC/ PHY config/status TLV error sent from LLDP. Add PoE Force Mode and add 13 API
commands.
11/30/22 E
FW v8.50.0079: add First Time Wizard, make SNMP mode disabled factory default, and
change Auth Method default. Initial Lantronix rebrand. Note the two-step FW upgrade
(v8.40.1845 > 8.50.0062 > 8.50.0070). Add DHCP per VLAN function and add PoE Force
mode. Add SM24TAT4XB UL 62368-1 Certification. Update device and box labels.
2/21/23 F
Add SM24TAT4XB UL 62368-1 Certification. FW 8.50.0096 (both models): add support for
ConsoleFlow and implement API support HTTPS, CLI, and LPM. SM24TAT4XB only: add
DHCP per port function to select a particular IP interface. Add First Time Wizard. Change
SNMP Mode default to Disabled and change Auth Method defaults. Note when upgrading:
1) Reload factory defaults. 2) Copy running-config startup-config.

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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
Product Description ......................................................................................................................................................6
Ordering Information ....................................................................................................................................................6
Specifications ...............................................................................................................................................................8
Power Consumption .................................................................................................................................................. 15
SM48TAT4XA-RP Power Consumption............................................................................................................ 15
SM24TAT4XB Power Consumption.................................................................................................................. 16
About This Manual .................................................................................................................................................... 18
Related Information ................................................................................................................................................... 18
Front Panels ...............................................................................................................................................................19
Ports .......................................................................................................................................................................... 19
Console Port.............................................................................................................................................................. 19
10/100/1000 RJ45 Ports ................................................................................................................................... 19
1G/10G SFP+ Ports .......................................................................................................................................... 20
LED Descriptions....................................................................................................................................................... 20
Mode/Reset button .................................................................................................................................................... 24
Back Panels ...............................................................................................................................................................25
AC Power Connector ................................................................................................................................................ 25
Electrical Safety Warnings ........................................................................................................................................ 26
Installation ..................................................................................................................................................................27
Package Contents ..................................................................................................................................................... 27
Power Cord Included................................................................................................................................................. 27
Safety Instructions for Rack Mount Installations ....................................................................................................... 27
Mounting the Switch in a 19-inch Rack ..................................................................................................................... 28
Mounting the Switch on Desk or Shelf ...................................................................................................................... 28
Installing SFP+ Modules ........................................................................................................................................... 29
Connecting Powered Devices (PDs)......................................................................................................................... 30
Connecting the AC Power Cord ................................................................................................................................ 30
Redundant Power (SM48TAT4XA-RP Only) ............................................................................................................ 31
Replacing a Power Supply ........................................................................................................................................ 31
Power Supply Specifications..................................................................................................................................... 31
Unpacking / Installing / Replacing Power Supplies................................................................................................... 31
Power Supply Voltage and Frequency.............................................................................................................. 32
Unpacking Power Supply .................................................................................................................................. 32
Installing a Power Supply .................................................................................................................................. 32
Replacing Power Supply ................................................................................................................................... 33
PoE vs. PoE+ vs. PoE++ .......................................................................................................................................... 34
PoE/PoE+/PoE++ Comparison ................................................................................................................................. 34

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Initial Switch Configuration .........................................................................................................................................35
Initial Switch Configuration via Web Browser ........................................................................................................... 35
Initial Switch Configuration via CLI............................................................................................................................ 36
Troubleshooting..........................................................................................................................................................37
Basic Troubleshooting....................................................................................................................................... 37
LED Troubleshooting......................................................................................................................................... 37
PoE Troubleshooting......................................................................................................................................... 38
Compliance Information .............................................................................................................................................39
Declaration of Conformity.................................................................................................................................. 39
FCC Regulations ............................................................................................................................................... 39
Canadian Regulations ....................................................................................................................................... 40
RoHS, WEEE, and Environmental Programs ................................................................................................... 40
Device Label and Box Label ......................................................................................................................................40
Record Device and System Information ....................................................................................................................41
RMA Form 02 Dec 2022 ............................................................................................................................................42
Return Material Authorization Request Form 2022 .......................................................................................... 42

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Product Description
The SMxxTAT4Xx L2+ managed GbE PoE+ switches are next-generation Ethernet switches offering a full suite of
L2 features, additional 10GbE uplink connections, better PoE functionality and usability, including advanced L3
features such as Static Route. In addition to the extensive management features, the SMxxTAT4Xx also provide
carrier Ethernet features such as ERPS/EPS/PTPv2, of which make them suitable for Carrier Ethernet applications.
The SMxxTAT4Xx deliver 24 or 48 (10M/100M/1G) RJ45 with 48 PoE+ (support 802.3at/af, and total up to 820W)
ports, 4 10GbE SFP+ ports and RJ45 Console port. The SMxxTAT4Xx provides high hardware performance and
environment flexibility for SMBs and enterprises. The SM48TAT4XA-RP supports redundant power with an
optional secondary power supply installed.
The embedded Device Managed System (DMS) features provide the benefits of easy to use, configure, install, and
troubleshoot in video surveillance, wireless access, and other SMB and Enterprise applications. The SMxxTAT4Xx
is ideal to deliver management simplicity, better user experience, and lowest total cost of ownership.
Key Features
•L2+ Managed features provide easier manageability, robust security and QoS.
•Built in Device Management System (DMS) Graphical Monitoring, Traffic Monitoring, & Troubleshooting
•ITU-T G.8031 Ethernet Linear Protection Switching (EPS)
•ITU-T G.8032 Ethernet Ring Protection Switching (ERPS)
•IEEE 1588v2 PTP
•DHCP Server, DHCP per port
•IPv4/IPv6 Management
•Compliant with IEEE 802.3at PoE+ and 802.3af PoE
•PoE Auto Power Reset, Always-On PoE, and PoE Force Mode
•Supports IPv4/IPv6 Layer 3 static routing
•IEEE 802.3az EEE Energy Efficient Ethernet standard for green Ethernet
•Supports two hot-swappable redundant PSU modules for power backup (SM48TAT4XA-RP only)
•ConsoleFlow and LPM support
Ordering Information
Model
Description
SM48TAT4XA-RP
48-port Gigabit PoE+ with (4) 1G/10G SFP+ slots, 820 Watts PoE budget. Supports
redundant power with secondary power supply installed.
SM24TAT4XB
24-port Gigabit PoE+ with (4) 1G/10G SFP+ slots, 370 Watts PoE budget.
PS-AC-920
Secondary Power Supply for redundant power support (920 Watts). Optional; sold
separately (5 year warranty).
SFPs and SFP+
Modules
See Lantronix full line of SFP transceivers on our SFP webpage (option; order
separately)
BRSM24-01
Wall Mount Bracket for SM24TAT4XB (option; order separately)

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ConsoleFlow
Centralized cloud-based or on-premise Management Software for Lantronix PoE
Switches, Remote Environment Management (REM) and IoT Gateway products. For
ConsoleFlow cloud-based software-as-a-service, select an annual subscription
model.
CF-NWSCLOUDSAAS-
xYR ConsoleFlow Cloud Subscription x-Years (where x = 1, 3, or 5 year subscription)
CF-NWS-ONPREMISE-
xYR
ConsoleFlow On- premise Subscription x-Years (where x = 1, 3, or 5 year
subscription)
Application Example
The figure below depicts and SM48TAT4XA-RP and an SM24TAT4XB providing high density PoE+ in an office
environment.

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Specifications
Port Configuration
Model Total Ports RJ45 (10M/100M/1G) Uplinks Console
SM48TAT4XA-RP 52 48 4 SFP+ RJ45
SM24TAT4XB 28 24 4 SFP+ RJ45
Hardware Performance
Model Forwarding Capacity Switching Capacity Mac Table Jumbo Frames
SM48TAT4XA-RP 130.944 Mpps 176 Gbps 32 K 10240 Bytes
SM48TAT4XB95.238 Mbps 128 Gbps 32 K 10240 Bytes
Environmental Range (all Models)
Operating Temperature Storage Temperature Altitude
Fahrenheit Centigrade Fahrenheit Centigrade Feet Meters
32 to 122° 0 to 50° -4 to +158° -20 to +70° < 10000 < 3000
Dimensions, Weights, Humidity
Model Dimensions (WxHxD) Weight Operating
Humidity
Millimeters Inches Kilograms Pounds
SM48TAT4XA-RP
442x44x440
17.4x1.7x17.3
3.8
8.38
Up to 95%, Non-condensing
SM24TAT4XB
442x44x440
17.4x1.7x17.3
3.28
7.25
Up to 95%, Non-condensing
Voltage and Frequency
AC Input Voltage and Frequency (All Models)
Voltage 100-240 VAC
Frequency 50~60 Hz
PSU Output Power
SM48TAT4XA-RP 54VDC / 820W per Power Module. Supports dual 100-250 VAC power input (modular,
hot swappable, power redundancy).
SM24TAT4XB 54VDC / 370W

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PoE Power Capacity
Model
Available PoE
Power
# of Ports that support PoE (15.4W) and PoE+ (30.0W)
SM48TAT4XA-RP 1640 W
Each of ports 1 - 48 support PoE/ PoE+ within available PoE power. Up
to 820 W PoE budget with single power supply (15W on all 48 ports or
30W on 24 ports at the same time).
Up to 1640 W PoE budget with dual power supplies (full 30W on all 48
ports at the same time).
SM24TAT4XB 370 W Each of ports 1 - 24 support PoE/ PoE+ within available PoE Power.
Certifications
EMC and Safety
EN61000-4-5 (for RJ45 Port, Surge 6KV)
CE, FCC Part 15 Class A; UL Listed
European Standard EN 55032:2015/AC:2016 Class A,
EN61000-3-2:2014, EN6100-3-3:2013, EN 55024:2010/A1:2015
(IEC 61000-4-2 Edition 2.0 2008-12, IEC 61000-4-3 Edition 3.2 2010-04, IEC 61000-4-4 Edition 3.0 2012-04, IEC
61000-4-5 Edition 3.0 2014-05, IEC 61000-4-6 Edition 4.0 2013-10, IEC 61000-4-8 Edition 2.0 2009-09,
IEC 61000-4-11 Edition 2.1 2017-05) and Australian Standard AS/NZS CISPR 32:2015 and CISPR
32:2015/COR1:2016. ANSI C63.4-2014, CISPR PUB. 22, FCC Part 15 Subpart B, Canada Standard ICES-003 Issue 6.
Radiated and conducted emissions are compliance in Class A limits.
With the technical construction on file at the above address, this product carries the CE Mark
UL 62368-1 Certification
MTBF (Environment: GB, GC - Ground Benign, Controlled)
SM48TAT4XA-RP: Temp: 40.00 °C. MTBF = 69,015 Hrs.
SM48TAT4XA-RP: Temp: 50.00 °C. MTBF = 44,683 Hrs.
SM24TAT4XB: Temp: 30.00 °C. MTBF = 63, 317 Hrs.
SM24TAT4XB: Temp.: 50.00°C. MTBF = 63,317 Hrs.

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Software Features
Ring Management
ITU-T G.8031
Supports ITU-T G.8031 Ethernet Linear Protection Switching (EPS)
ITU-T G.8032
Supports ITU-T G.8032 Ethernet Ring Protection Switching (ERPS)
Layer 2 Switching
Spanning Tree
Protocol (STP)

Standard Spanning Tree 802.1d: an OSI layer-2 protocol which ensures a loop free
topology for any bridged LAN
Rapid Spanning Tree (RSTP) 802.1w: provides for faster spanning tree convergence
after a topology change
Multiple Spanning Tree (MSTP) 802.1s: provides for multiple spanning tree
instances
VLANs

802.1Q tag-based VLAN: Supports up to 4K VLANs simultaneously (out of 4096
VLAN IDs)
Port-based VLAN: A port member of a VLAN can be isolated to other isolated ports
on the same VLAN and Private VLAN
Private VLAN Edge (PVE): Private VLANs are based on the source port mask, and
there are no connections to VLANs. This means that VLAN IDs and Private VLAN
IDs can be identical
Voice VLAN: The Voice VLAN feature enables voice traffic forwarding on the Voice
VLAN
Guest VLAN: The IEEE 802.1X Guest VLAN feature allows a guest VLAN to be
configured for each 802.1X port on the device to provide limited services to non-
802.1X-compliant clients
Q-in-Q (double tag) VLAN: Business customers of service providers often have
specific requirements for VLAN IDs and the number of VLANs to be supported
802.1v Protocol VLAN: Classifying multiple protocols into a single VLAN often
imposes VLAN boundaries that are inappropriate for some of the protocols,
requiring the presence of a non-standard entity to relay between VLANs the
frames bearing the protocols for which the VLAN boundaries are inappropriate
MAC-based VLAN: The MAC-based VLAN feature allows incoming untagged
packets to be assigned to a VLAN and thus classify traffic based on the source
MAC address of the packet
IP Subnet-Based VLAN: In an IP subnet–based VLAN, all the end workstations in an
IP subnet are assigned to the same VLAN. In this VLAN, users can move their
workstations without reconfiguring their network addresses
Management VLAN: used for managing the switch from a remote location by
using protocols such as telnet, SSH, SNMP, syslog, etc.
LACP Trunking
Link Aggregation Control Protocol (LACP) IEEE 802.3ad: controls whether LACP is
enabled on this switch port. LACP will form an aggregation when 2 or more ports are
connected to the same partner. Up to 26 Groups and up to 16 ports per Group.

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GARP VLAN
Registration Protocol
(GVRP)
GVRP (Generic Attribute Registration Protocol) VLAN Registration Protocol is a Layer 2
network protocol, for automatic configuration of switches in a VLAN network
DHCP Relay 
Relay of DHCP traffic to DHCP server in different VLAN

Works with DHCP Option 82
IGMP v1/v2/v3
Snooping
IGMP limits bandwidth-intensive multicast traffic to only the requesters. Supports
1024 multicast groups
IGMP Querier IGMP querier is used to support a Layer 2 multicast domain of snooping switches in
the absence of a multicast router
IGMP Proxy
IGMP snooping with proxy reporting or report suppression actively filters IGMP
packets in order to reduce load on the multicast router
MLD v1/v2 Snooping Delivers IPv6 multicast packets only to the required receivers
Multicast VLAN
Registration (MVR)
MVR uses a dedicated manually-configured VLAN, called the multicast VLAN, to
forward multicast traffic over Layer 2 network in conjunction with IGMP snooping
Layer 3 Switching
IPv4 Static Routing IPv4 Unicast: Static routing
IPv6 Static Routing IPv6 Unicast: Static routing
Security
ACLs
Supports up to 512 entries. Drop or rate limitation based on:
Source and destination MAC, VLAN ID or IP address, protocol, port
Differentiated services code point (DSCP) / IP precedence
TCP/ UDP source and destination ports
802.1p priority
Ethernet type
Internet Control Message Protocol (ICMP) packets

TCP flag
Port Security Locks MAC addresses to ports, and limits the number of learned MAC address
IP Source Guard
Prevents illegal IP address from accessing to specific port in the switch
Storm Control
Prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast
storm on a port
IEEE 802.1X

IEEE802.1X: RADIUS authentication, authorization and accounting, MD5 hash,
guest VLAN, single/multiple host mode and single/multiple sessions
Supports IGMP-RADIUS based 802.1X

Dynamic VLAN assignment
TACACS+
Supports TACACS+ authentication. Switch as a client
Secure Shell (SSH) SSH secures Telnet traffic in or out of the switch; SSH v1 and v2 are supported

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Secure Sockets Layer
(SSL)
SSL encrypts the HTTP traffic, allowing advanced secure access to the browser-based
management GUI in the switch
HTTPs (Secured Web) Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP
BPDU Guard
BPDU guard, an enhancement to STP, removes a node that reflects BPDUs back in the
network. It enforces the STP domain borders and keeps the active topology
predictable by not allowing any network devices behind a BPDU guard-enabled port
to participate in STP.
DHCP Snooping
A feature acts as a firewall between untrusted hosts and trusted DHCP servers
Loop Protection Prevents unknown unicast, broadcast and multicast loops in Layer 2 switching
configurations
Quality of Service (QoS)
Hardware Queues Supports 8 hardware queues
Classification

Port based: Traffic QoS by Port
802.1p: VLAN priority based Layer 2 CoS QoS, Class of service is a parameter
used in data and voice protocols to differentiate the types of payloads contained
in the packet being transmitted
DSCP based Differentiated Services (DiffServ) Layer 3 DSCP QoS: IP packets can
carry either an IP precedence (IPP) value or a Differentiated Services Code Point
(DSCP) value. QoS supports the use of either value because DSCP values are
backward-compatible with IP precedence values

Classification and re-marking TCP/IP ACLs: QoS by ACL
Rate Limiting

Ingress policer
Egress shaping and rate control

Per port
Scheduling
Strict priority and weighted round-robin (WRR): a scheduling algorithm that uses
weights assigned to queues to determine how much data will be emptied from a
queue before moving to the next queue
Management
IEEE 1588v2 PTP (TC)
Support IEEE 1588 v2 PTP (Precision Time Protocol)
DHCP

DHCP Server: supports DHCP server to assign IP to DHCP clients
DHCP Client: a standardized network protocol used on Internet Protocol (IP)
networks for dynamically distributing network configuration parameters, such as
IP addresses for interfaces and services
DHCP per port provides port-based address allocation support
Event/Error Log
Support SNMP Trap/Syslog/SMTP
SNMP
SNMP version1, 2c and 3 with support for traps and SNMP v3 user-based security
model (USM)

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Remote Monitoring
(RMON)
Embedded RMON agent supports RMON groups 1,2,3,9 (history, statistics, alarms,
and events) for enhanced traffic management, monitoring and analysis
Firmware Upgrade 
Web browser upgrade (HTTP/ HTTPs) and TFTP

Upgrade via console port as well
Configuration
Backup/Restore
Save and update the config files controlling the switch
Port Mirroring
Traffic on a port can be mirrored to another port for analysis with a network analyzer
or RMON probe. Up to N-1 (N is Switch’s Ports) ports can be mirrored to single
destination port. A single session is supported.
IEEE 802.1ab (LLDP)

Used by network devices for advertising their identities, capabilities, and
neighbors on an IEEE 802ab local area network

Support LLDP-MED (ANSI/TIA-1057) extensions
UPnP
The Universal Plug and Play Forum was formed to standardize discovery and control
of networked devices. See the Open Connectivity Foundation webpage.
CDP Aware
CDP operation is restricted to decoding incoming CDP frames (the switch doesn’t
transmit CDP frames). CDP frames are only decoded if LLDP on the port is enabled
s-Flow
The industry standard for monitoring high speed switched networks. It gives complete
visibility into the use of networks enabling performance optimization,
accounting/billing for usage, and defense against security threats
Web GUI Built-in switch configuration utility for browser-based device configuration
CLI Lets you configure/monitor/diagnose switch in Command Line mode
Dual Image
Independent primary and secondary firmware images for backup while upgrading
NTP Network Time Protocol (NTP) is a networking protocol for clock synchronization
between computer systems over a packet-switched network
Switch Management

HTTP/HTTPs
SSH
DHCP Client/ DHCPv6 Client
Telnet Client

IPv6 Management
Diagnostics

Cable diagnostics
Ping
Syslog

Traceroute

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Power over Ethernet (PoE)
Port Configuration Supports per port PoE configuration function
PoE Scheduling Supports per port PoE scheduling to turn on/off the PoE devices (PDs)
Auto-checking Check the link status of PDs. Reboot PDs if there are no responses
Power Delay
The switch provides power to the PDs based on delay time when PoE switch boots up,
in order to protect switch from misuse of the PDs
Power Management
modes
(SM48TAT2XA-RP
only)
In Redundant mode, only provide Primary Power Supply up to 820W when two power
supply modules are installed. If one power supply crashes, it can still provide enough
power for system operation and also PD’s operation. This is the default.
In Boost mode, provide Primary Power Supply up to 1640W when two power supply
modules are installed. When the application total PDs’ power use is over 820W, if one
power supply crashes, the system will automatically reboot due to power loading
influence. After the switch finishes rebooting, it will only provide 820W to PDs.
Device Management System (DMS)
Graphical
Monitoring

Topology view: Intuitive way to configure and manage switches and devices with
visual relations
Floor view: Easily drag and drop PoE devices to help build smart workforces
Map view: Enhance efficiency to drag and drop devices and view surroundings
on Google Maps
Traffic Monitoring: Display visual chart of network traffic of all devices and
monitor every port at any time from switches
Find my Switch Helps you locate switches quickly and manage directly
Traffic Monitoring
Display visual chart of network traffic of all devices and monitor every port at any
time from switches
Troubleshooting

Network diagnostic between master switch and devices
Provides protection mechanisms, such as rate-limiting to protect your devices
from brute-force downloading
ConsoleFlow and LPM Options (order separately)
ConsoleFlow
•Auto-discovery of devices connected to the switch interfaces
•Perform on-demand backup and restore of device configuration
•Perform secure remote device firmware upgrades
•Lantronix-hosted public cloud offering
LPM
Lantronix Provisioning Manager allows easy administration of Lantronix devices.
LPM lets you quickly update firmware, update configuration, and provision one or more
devices simultaneously.

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Power Consumption
SM48TAT4XA-RP Power Consumption
2-module Power
AC 100V Input
Status Operation Interface AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4
100 16.74 0.97 1674.00 1623.78
Non-PoE
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4 100 1.01 0.95 101.00 95.95
AC 110V Input
Status Operation Interface AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4
110 15.09 0.98 1659.90 1626.70
Non-PoE
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4 110 0.93 0.94 102.30 96.16
AC 220V Input
Status Operation Interface AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4
220 7.34 0.97 1614.80 1566.36
Non-PoE
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4 220 0.60 0.70 132.00 92.40
AC 240V Input
Status Operation Interface AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4
240 6.69 0.97 1605.60 1557.43
Non-PoE
Full-loading
60 minutes later
1G TP Port x 48
10G SFP x 4 240 0.61 0.65 146.40 95.16

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SM24TAT4XB Power Consumption
AC Power Consumption: Measure AC power consumption after 60 minutes under full loading with wire speed
forwarding.
1. AC 100V Input (SM24TAT4XB)
Device Status Operation
Interface
AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Non-loading None 100 0.30 0.90 30.00 27.00
Standby mode
1 minute
1G TP Port x 24
10G SFP x 4 100 4.5 0.99 450.00 445.50
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 100 4.54 0.99 454.00 449.46
Non-PoE
Standby mode
1G TP Port x 24
10G SFP x 4 100 0.42 0.95 42.00 39.90
Non-PoE
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 100 0.45 0.97 45.00 43.65
Note: Apparent Power (VA) = AC Voltage x AC Current Consumption.
Real Power (W) = Apparent Power (VA) x Power Factor.
2. AC 110V Input (SM24TAT4XB)
Device Status Operation
Interface
AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Non-loading None 110 0.28 0.90 30.80 27.72
Standby mode
1 minute
1G TP Port x 24
10G SFP x 4 110 4.07 0.99 447.70 443.22
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 110 4.09 0.99 449.90 445.40
Non-PoE
Standby mode
1G TP Port x 24
10G SFP x 4 110 0.38 0.97 41.80 40.55
Non-PoE
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 110 0.43 0.93 47.30 43.99
Note: Apparent Power (VA) = AC Voltage x AC Current Consumption.
Real Power (W) = Apparent Power (VA) x Power Factor.

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3. AC 220V Input (SM24TAT4XB)
Device Status Operation Interface
AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Non-loading None 220 0.22 0.56 48.40 27.10
Standby mode
1 minute
1G TP Port x 24
10G SFP x 4 220 1.99 0.98 437.80 429.04
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 220 2.01 0.98 442.20 433.36
Non-PoE
Standby mode
1G TP Port x 24
10G SFP x 4 220 0.27 0.67 59.40 39.80
Non-PoE
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 220 0.27 0.72 59.40 42.77
Note: Apparent Power (VA) = AC Voltage x AC Current Consumption.
Real Power (W) = Apparent Power (VA) x Power Factor.
4. AC 240V Input (SM24TAT4XB)
Device Status Operation Interface
AC Voltage
(V)
AC Current
Consumption
(A)
Power
Factor
Apparent
Power (VA)
Real Power
(W)
Non-loading None 240 0.22 0.51 52.80 26.93
Standby mode
1 minute
1G TP Port x 24
10G SFP x 4 240 1.82 0.98 436.80 428.06
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 240 1.84 0.98 441.60 432.77
Non-PoE
Standby mode
1G TP Port x 24
10G SFP x 4 240 0.27 0.62 64.80 40.18
Non-PoE
Full-loading
60 minutes later
1G TP Port x 24
10G SFP x 4 240 0.27 0.67 64.80 43.42
Note: Apparent Power (VA) = AC Voltage x AC Current Consumption.
Real Power (W) = Apparent Power (VA) x Power Factor.

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About This Manual
This manual describes how to install, initially configure, and troubleshoot the switch, including how to:
•Install the switch,
•Check switch status by reading the LED behavior,
•Reset the switch or restore the switch to factory defaults,
•Use a Web browser or the CLI to initially configure the switch, and
•Troubleshoot the switch.
Note that this manual provides links to third party web sites for which Lantronix is not responsible.
Related Information
A printed Quick Start Guide is shipped with each switch. For Lantronix Documentation, Firmware, App Notes, etc.
go to https://www.lantronix.com/technical-support/. For SFP manuals see Lantronix SFP webpage. Note that this
manual provides links to third party web sites for which Lantronix is not responsible.
Other related manuals are listed below.
•SMxxTAT4Xx Quick Start Guide, 33784
•SMxxTAT4Xx Web User Guide, 33786
•SMxxTAT4Xx CLI Reference, 33787
•API User Guide for SM24TAT4XB and SM48TAT4XA-RP, 33843
•Release Notes (version specific)
Caution: The switch is an indoor device. If it is to be used with outdoor devices such as outdoor IP cameras or
outdoor Wi-Fi APs, then you are strongly suggested to install a surge protector or surge suppressor in order to
protect the switch. The switch is compliant with 802.3at in Environment A when using an isolated power supply.
For 802.3at Environment B applications, i.e., building to building, copper to copper endpoint connections: 1) use
an Ethernet network isolator module (PoE disabled), or 2) use mid-span injector(s), such as Lantronix MIL-L100
or, L1000i-at, between this switch’s PSE port and link partner PD port.
Warning: This equipment is compliant with Class A of CISPR 32. In a residential environment this equipment may
cause radio interference.

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Front Panels
The SM24TAT4XB and the SM48TAT4XA-RP front panel contain the Ports, LEDs, Console Port, and Mode/Reset
button as shown and described below.
SM48TAT4XA-RP front panel:
SM24TAT4XB front panel:
Ports
The front panel data ports are described below.
Console Port
The front panel Console port provides an RJ-45 Console port to connect to a PC or terminal for Command Line
Interface (CLI) command entry (e.g., a PC running Hyper Terminal, Tera Term, etc.). See Initial Switch
Configuration via CLI on page 36.
10/100/1000 RJ45 Ports
The SM48TAT4XA-RP provides 48 10M/100M/1G (RJ45) front panel ports. The SM24TAT4XB provides 24
10M/100M/1G (RJ45) front panel ports.

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1G/10G SFP+ Ports
The SM48TAT4XA-RP and the SM24TAT4XB both provide four SFP+ uplink ports.
SM24TAT4XB: SM48TAT4XA-RP:
LED Descriptions
The front panel LEDs provide switch status checking and monitoring. There are four types of LEDs as follows:
System LED: Indicates if the switch is powered up correctly or indicates if there is a system alarm triggered for
troubleshooting.
Power LEDS (SM48TAT4XA-RP only): Indicates if the switch power supply A/B powered up correctly or not.
Port Status LEDs: Indicates the current status of each port. You can check these LEDs to understand the port
status in different modes, after changing the mode by pressing the Mode/Reset button.
Mode LED: Indicates the mode of all ports on the switch. You can press the Mode/Reset button sequentially to
switch among the two different modes (Link/Activity/Speed mode and PoE mode).
Table 1: System LED
LED Color State Description
System
Green
On The switch is powered ON correctly.
Off The switch is not receiving power.
Red On An abnormal state, such as exceeding operating temperature
range, has been detected in the switch.
Table 2: Power LEDS (SM48TAT4XA-RP only)
LED Color State Description
PWRA Green On The switch is powered ON correctly.
Off The switch is not receiving power from power supply A.
PWRB Green On The switch is powered ON correctly.
Off The switch is not receiving power from power supply B.