Lantronix SISTP10 0-3-LRT Series User manual

SISTP1040-342-LRT SISTP1040-382-LRT
SISTP10x0-3xx-LRT Series
Unmanaged Hardened Gigabit Ethernet PoE+ Switches
Install Guide
Part Number 33733
Revision G April 2022

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 2of 31
Intellectual Property
© 2021-2022 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.
Patented: https://www.lantronix.com/legal/patents/; additional patents pending.
Warranty
For details on the Lantronix warranty policy, 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
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
7/2/18
B
Add FCC and CID2 information.
7/14/20 C
Change power supply 25080 to 25105, update RJ45 LED description, add caution on DC
power supply earth grounding and add note on switch and Power Supply 25105/25104 earth
grounding, update DoC, add WMBH-01 and remove reference to UI.
9/15/20 D
Clarify Terminal Block / switch power on and Power Supply information. Update compliance
information.
6/30/21
E
Update product label information and features.
7/28/21 F
Update Safety certification from EN60950 or IEC60950 to IEC62368-1/EN62368-1. Update
DoC.
4/18/22 G
Add IEEE 802.3bt Power Input Ripple and Noise Specification. Initial Lantronix rebrand.
Update DoC.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 3of 31
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.
WARNING: Alerts you to a potential hazard that could cause personal injury.
CAUTION: Alerts you to a potential hazard that could cause loss of data or damage the system or equipment.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 4of 31
Contents
Safety Warnings and Cautions.....................................................................................................................................3
About This Manual ...................................................................................................................................................5
Related Information ..................................................................................................................................................5
Key Features ............................................................................................................................................................5
Ordering Information ................................................................................................................................................5
Specifications ...............................................................................................................................................................6
Front Panel.................................................................................................................................................................10
Back and Bottom Panels ............................................................................................................................................10
RESET Button ............................................................................................................................................................11
Installation and Setup.................................................................................................................................................12
Unpacking/ Package Contents...............................................................................................................................12
Switch Mounting Options .......................................................................................................................................12
Mounting the Switch on a Wall (Optional) ..........................................................................................................12
Mounting the Switch on a DIN Rail ....................................................................................................................13
Install and Connect SFPs via Fiber Optic Cable ....................................................................................................14
Connect PoE+ Ports via TP Copper Cable ............................................................................................................14
PoE / PoE+ Spec Comparison ...........................................................................................................................15
IEEE 802.3bt Power Input Ripple and Noise Specification................................................................................15
Grounding...............................................................................................................................................................16
Power Supply Features and Specifications ...........................................................................................................17
Industrial Power Supply 25105 ..........................................................................................................................17
Industrial Power Supply 25104 ..........................................................................................................................18
Connecting to Power ..............................................................................................................................................19
Adjusting Power Supply Output Voltage (+V ADJ) ................................................................................................19
LED Descriptions........................................................................................................................................................20
Troubleshooting..........................................................................................................................................................22
General Troubleshooting........................................................................................................................................22
LED Summary ........................................................................................................................................................22
LED Troubleshooting .............................................................................................................................................23
PoE Modes and Compliance..................................................................................................................................23
Troubleshooting PoE Problems .............................................................................................................................25
Declaration of Conformity...........................................................................................................................................27
User Information.........................................................................................................................................................27
Cautions and Warnings..............................................................................................................................................28

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 5of 31
Product Description
The SISTP10x0-3xx-LRT series industrial unmanaged GbE switches are plug-and-play Ethernet switches
offering an easy way to make the transition to Gigabit Ethernet and increase the speed of your network
connection. They are energy efficient, built to last, and rigorously tested to provide the reliability businesses
need, and they are suitable for industrial Ethernet applications. The SISTP10x0-3xx-LRT series includes two PoE+
models: SISTP1040-342-LRT and SISTP1040-382-LRT. The series offers various port combinations all with PoE+
budget, to meet different requirements in various applications.
About This Manual
This manual describes how to install, configure, and troubleshoot the SISTP10x0-3xx-LRT switches. It also
describes how to determine LED meanings and how to reset the switch.
Related Information
A printed Quick Start Guide is shipped with each SISTP10x0-3xx-LRT. For Lantronix Drivers, Firmware, Manuals,
Brochures, Data Sheets, etc. go to the Lantronix Technical Resource Center. For SFP manuals see the Lantronix
SFP webpage. Note: Information in this document is subject to change without notice. Note that this manual
provides links to third party web sites for which Lantronix is not responsible.
Key Features
•Slim type industrial switch
•IEEE 802.3af/at Power over Ethernet
•IEEE 802.3az Energy Efficient Ethernet standard
for green Ethernet application
•Flow Control
•Support Jumbo Frame up to 9K bytes
•Layer 2 wire-speed switching engine
•Ruggedized metal closure
•IEEE 802.3az Energy Efficient Ethernet
•Fan-less design
•Wide operating temperature range (-40°C to
+75°C)
•Dual Power input
•Din Rail and Wall Mount options
Ordering Information
Model
Description
SISTP1040-342-LRT
Unmanaged Industrial PoE+ Switch, (4) 10/100/1000Base-T PoE+ Ports+
(2) 100/1000Base-X SFP Ports
SISTP1040-382-LRT
Unmanaged Industrial PoE+ Switch, (8) 10/100/1000Base-T PoE+ Ports with
(2) 100/1000Base-X SFP Ports
Optional Accessories (sold separately)
25105
Optional Industrial Power Supply for SISTP1040-342-LRT; sold separately.
25104
Optional Industrial Power Supply for SISTP1040-342-LRT and SISTP1040-382-LRT; sold
separately.
SFP Modules
SFP modules sold separately (see Lantronix SFP Product Selector page)
WMBH-01
Optional Wall Mount Bracket; sold separately.
DRBH-01
Optional Din Rail Bracket; sold separately.
OCA-P181610
Optional 18x16x10” Polycarbonate Enclosure; sold separately.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 6of 31
Specifications
Port Configuration
Model Total Ports
RJ45
(10M/100M/1G)
SFP
(100M/1G)
Console
Available PoE
Power
SISTP1040-342-LRT
6
4
2
--
120W
SISTP1040-382-LRT
10
8
2
--
240W
Hardware Performance
Model
Forwarding
Capacity (Mpps)
Switching
Capacity (Gbps)
Mac Table
(K)
Jumbo Frames
(Bytes)
SISTP1040-342-LRT
8.928
12
4
9K
SISTP1040-382-LRT
14.88
20
4
9K
Environmental Ranges
Operating Temperature Storage Temperature
Operating
Humidity
Altitude
Fahrenheit Centigrade Fahrenheit Centigrade
5% to 95%
non-
condensing
Feet Meters
-40 to 167 -40 to 75 -40 to 185 -40 to 85 < 10000 <3000
Dimensions, Weights, Mounting
Model Dimension (WxHxD)*Weight Mounting Type
Millimeters Inches Kilograms Pounds
SISTP1040-342-LRT
44x 135x 130
1.7x 5.3x 5.1
0.43
0.94
DIN rail, Wall
SISTP1040-382-LRT
44x 135x 130
1.7x 5.3x 5.1
0.46
1.01
DIN rail, Wall
* Dimensions shown above are without the DIN rail bracket and power plug installed.
The dimensions are 1.7x 5.3x 5.9” with the DIN rail bracket and power plug installed.
Voltage and Frequency
Primary Power Supply - DC Input Voltage
DC Nominal 48 VDC dual inputs
DC Operating Range 48 to 57 VDC

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 7of 31
PoE Power Capacity
Model
Available PoE
Power Number of Ports That Support PoE (15.4W) and PoE+ (30.0W)
SISTP1040-342-LRT 120W Each of port 1 - 4 support PoE/ PoE+ within available PoE Power
SISTP1040-382-LRT 240W Each of port 1 - 8 support PoE/ PoE+ within available PoE Power
Certifications
EMS Compliance
IEC 61000-4-2 (ESD) Contact 8K Air 15KV
IEC 61000-4-3 (RS) 3V/m
IEC 61000-4-4 (EFT)
Power ports and telecommunication ports
0.5KV
Signal ports 0.25KV
IEC 61000-4-5 (SURGE Line to line 0.5KV Line to ground 1.0KV
IEC 61000-4-6 (CS) Voltage Level 129.5 dB(uV) (3.0V)
IEC 61000-4-2 (PFMF) 1 A/m A
Regulatory Compliance
EMI
FCC Part 15 Class A
Safety
CE, IEC62368-1/EN62368-1
CI/D2
CI/D2
Mechanical Stability
Vibration
IEC 60068-2-6
Shock
IEC 60068-2-27
Freefall
IEC 60068-2-32
MTBF
Model
MTBF
Environment
SISTP1040-342-LRT 1,052,267 Hrs. GB, GC - Ground Benign, Controlled. Temp: 25.00 deg. C.
188,587 Hrs. GB, GC - Ground Benign, Controlled. Temp: 75.00 deg. C.
SISTP1040-382-LRT 1,043,630 Hrs GB, GC - Ground Benign, Controlled. Temp: 25.00 deg. C.
156,272 Hrs. GB, GC - Ground Benign, Controlled. Temp: 75.00 deg. C.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 8of 31
DC Power Consumption
SISTP1040-382-LRT
1. DC 52V Input (SISTP1040-382-LRT)
Status Operation Interface
DC Current
Consumption (A)
DC Voltage (V)
DC Power
Consumption (W)
Non-loading None 0.07 52 3.64
Standby mode 1G TP Port x 8
1G SFP Port x 2 4.55 52 236.60
Full-loading
60 minutes later *
1G TP Port x 8
1G SFP Port x 2 4.55 52 236.60
2. DC 57V Input (SISTP1040-382-LRT)
Status Operation Interface DC Current
Consumption (A)
DC Voltage (V) DC Power
Consumption (W)
Non-loading None 0.07 57 3.99
Standby mode 1G TP Port x 8
1G SFP Port x 2 4.10 57 233.70
Full-loading
60 minutes later *
1G TP Port x 8
1G SFP Port x 2 4.10 57 233.70
* DC power consumption measured after 60 minutes under full loading with wire speed forwarding.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 9of 31
SISTP1040-342-LRT
1. DC 52V Input (SISTP1040-342-LRT)
Status Operation Interface DC Current
Consumption (A) DC Voltage (V) DC Power Consumption (W)
Non-loading None 0.07 52 3.64
Standby mode 1G TP Port x 4
1G SFP Port x 2 2.29 52 119.08
Full-loading
60 minutes later
1G TP Port x 4
1G SFP Port x 2 2.29 52 119.08
2. DC 57V Input (SISTP1040-342-LRT)
Status Operation Interface DC Current
Consumption (A) DC Voltage (V) DC Power Consumption (W)
Non-loading None 0.07 57 3.99
Standby mode 1G TP Port x 4
1G SFP Port x 2 2.08 57 118.56
Full-loading
60 minutes later
1G TP Port x 4
1G SFP Port x 2 2.08 57 118.56
* DC power consumption measured after 60 minutes under full loading with wire speed forwarding.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 10 of 31
Front Panel
The SISTP1040-382-LRT front panel is shown below.
Back and Bottom Panels
The SISTP1040-382-LRT back and bottom panels are shown below.
Back: Bottom:

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 11 of 31
RESET Button
You can press the bottom panel RESET button to reboot the switch.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 12 of 31
Installation and Setup
Unpacking/ Package Contents
Carefully unpack the switch. Please save the packing material for possible future use. Make sure you have
received these items:
•One Switch with Terminal Block attached
•One printed Quick Start Guide
•Four rubber feet
•One Power Supply (optional – sold separately)
Contact your sales representative if any item is missing or damaged.
Switch Mounting Options
The Switch can be installed in these ways:
•Wall mounted
•DIN Rail
Mounting the Switch on a Wall (Optional)
1. Attach the wall mounting plates to rear panel of the chassis. Insert screws and tighten with a screwdriver
to secure the plates.
2. Install user-supplied screws on the appropriate location on the wall.
3. Make sure that the switch is attached securely to wall.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 13 of 31
Mounting the Switch on a DIN Rail
1. Attach the DIN Rail mounting kit to the rear panel of the chassis. Insert screws and tighten with a screwdriver
to secure the kit.
2. Insert the upper lip of the DIN rail into the DIN-rail mounting kit and press the switch towards the DIN rail
until it snaps into place.
3. Make sure that the switch is attached securely to DIN Rail.
Note: Make all cable connections and perform grounding before connecting to power.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 14 of 31
Install and Connect SFPs via Fiber Optic Cable
The Switch lets you install a Small Form-Factor Pluggable (SFP) device of your choice to make a fiber connection
via the 100/1000Base-X SFP Ports. See the Lantronix SFP page for SFP models. See the related SFP manual for
safety precautions and warnings specific to your SFP model. The SFP ports should use UL Listed Optional
Transceiver products, Rated 3.3Vdc, Laser Class 1.
1. Prepare a fiber optic cable with an appropriate connecter. Warning: The fiber optic port contains a Class 1
laser device. When the ports are disconnected, always cover them with the provided plug. Exposed fiber
optic ports may cause skin or eye damage.
2. Remove a rubber plug from the Switch and position the SFP device at an SFP slot
with the label facing correctly.
3. Carefully slide the SFP device into the slot, aligning it with the internal installation
guides. Ensure that the SFP device is firmly seated against the internal mating
connector.
4. See the related SFP manual for operating information specific to your particular SFP
model.
5. Connect the other end of the cable to the appropriate far end Ethernet port.
Note: After the cable is properly connected at both ends, the Switch LED should be
functional. See LED Descriptions on page 20 for a description of LED operation.
See the related online SFP manual for operating information specific to your particular
SFP model.
Connect PoE+ Ports via TP Copper Cable
The Switch also provides 10/100/1000Base-T.
Supported cabling: PoE per IEEE 802.3af PoE supports Cat 3 and Cat 5. PoE per IEEE
802.3at PoE+ supports Cat 5. See “PoE / PoE+ Spec Comparison” on page 15 for more
PoE/PoE+ information.
1. Prepare a twisted-pair copper cable.
2. Connect one end of the cable to the Switch.
3. Connect the other end of the cable to a PD, such as a VoIP phone.
Note: After the cable is properly connected at both ends, the Switch SYS LED should be
functional. See LED Descriptions on page 20 for LED operation details.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 15 of 31
PoE / PoE+ Spec Comparison
PoE Plus (PoE+) provides extended support for new end devices with higher power requirements. The IEEE
802.3at standard provides up to 30W of power to include newer end devices such as IEEE 802.11n wireless access
points, security surveillance cameras, etc.
Property
802.3af PoE
802.3at PoE+
Power Available at PD
12.95 W
25.50 W
Max. Power from PSE
15.40 W
30.0 W
Voltage Range (at PSE)
44.0 – 57.0 V
50.0 – 57.0 V
Voltage Range (at PD)
37.0 – 57.0 V
42.5 – 57.0 V
Max. current
350 mA
600 mA per mode
Max. cable resistance
20 ohms (Cat 3)
12.5 ohms (Cat 5)
Power management 3 power class levels negotiated at
1st connection
4 power class levels negotiated at 1st
connection or 0.1 W steps negotiated
continuously
Supported cabling
Cat 3 and Cat 5
Cat 5
Supported modes
Mode A (endspan) and Mode B
(midspan) Mode A and Mode B
IEEE 802.3bt Power Input Ripple and Noise Specification
f< 500 Hz
VNoise Vpp
0.5
500 Hz to 150 kHz
0.2
150 kHz to 500 kHz
0.15
500 kHz to 1 MHz
0.1

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 16 of 31
Grounding
After the Switch is mounted and connected, the front panel grounding screw ( ) can be used for grounding.
Grounding and wire routing help limit the effects of noise due to electromagnetic interference (EMI). Run the
ground connection from the ground screw to the grounding surface before connecting devices.
ATTENTION: This case must be earth grounded. No DC input may be earth grounded. Use Isolated Power Supply.
Warning: Minimum input 57 VDC. Check polarity first!
Note: When input rating is 48 – 51 V DC, each PoE port output is 15 W max. When input rating is 51 - 57 V DC,
each PoE port output is 30 W max.
Note: Both the switch and Power Supply 25105 / 25104 must have their ground terminals connected to earth
ground.
Caution: Tying the output connection of the DC power supply to earth ground to create an earth referenced
voltage power supply will violate the power supply isolation to earth ground requirements of IEEE 802.3af/at/bt.
If an earth grounded power supply is utilized, all connected equipment to this power source must then be tied
to same local earth ground as the power supply source. Failure to maintain a common earth ground potential
for all nodes on the power distribution network can cause equipment damage due to high voltage ground
differences between the connected equipment. It is recommended that the power supply connections for PoE
networks not be tied to earth ground.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 17 of 31
Power Supply Features and Specifications
The Industrial Power Supplies (25104 and 25105) are optional accessories (sold separately).
•25104 Input: 85-264 VAC, 124-370 VDC. Output: 48~55 VDC, 5.0A, 240 Watts.
•25105 Input: 85-264 VAC, 124-370 VDC. Output: 48~55 VDC, 2.5A, 120 Watts.
Industrial Power Supply 25105
Output
Output Voltage 48VDC
Current Rating 2.5A
Power Rating 120 Watts
Ripple & Noise Max 120mVp-p
Voltage Range 48~55VDC
Voltage Tolerance ±1.0%
Line Regulation ±0.5%
Load Regulation ±1.0%
Setup, Rise Time 1500ms, 60ms
Hold Up Time 20ms
Input
Voltage Range Switch Selectable 88~264VAC 124~370VDC
Frequency Range 47~63Hz
Efficiency 90.5%
AC Current (Typical) 1.4A@115VAC 0.7A@230VAC
Inrush Current (Cold) 35A@115VAC 70A@230VAC Leakage Current <1.0mA@240VAC
Protection
Overload 110~150%
Overvoltage 56~65V
Over Temperature 95ºC±5ºC
Environment
Operating Temp. -25ºC~+70ºC. Storage Temp. -40ºC~+85ºC. Operating Humidity: 20~95% non-condensing.
Features
91% High Efficiency. 150% Peak Load.
Protected against: Short Circuit, Overload, Over Voltage, Overheating.
Convection air cooling. DIN rail mountable. RoHS compliant. MTBF 298.9 Khrs.
Dimensions (mm): 40W, 125.2H, 113.5D. Weight .67Kg.
Standards
Safety: UL508, TUV EN60950-1. Vibration: IEC60068-2-6
EMC Emission: EN55011, EN55022, CISPR22 Class B, EN61000-3-2, |EN61000-3-3.
EMC Immunity: EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, EN61000-4-8, EN61000-4-
11, EN55024, EN61000-6-2, EN50082-2, EN61204-3, SEMI F47, GL Approved.
Note: Both the switch and the power supply must have their ground terminals connected to earth ground.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 18 of 31
Industrial Power Supply 25104
Output
Output Voltage 48VDC
Current Rating 5A
Power Rating 240 Watts
Ripple & Noise Max 120mVp-p
Voltage Range 48~55VDC
Voltage Tolerance ±1.0%
Line Regulation ±0.5%
Load Regulation ±1.0%
Setup, Rise Time 300ms, 60ms
Hold Up Time 20ms
Input
Voltage Range Switch selectable. 88~132VAC. 124~370VDC
Frequency Range 47~63Hz
Efficiency 94%
AC Current (Typical) 2.6A@115VAC. 1.3A@230VAC
Inrush Current (Cold) 33A@115VAC. 65A@230VAC
Protection Overload 105~160%. Overvoltage 56~65V.
Environment
Operating Temp. -25ºC~+70ºC.
Storage Temp. -40ºC~+85ºC.
Operating Humidity 20~95% non-condensing
Features 94% High Efficiency. 150% Peak Load. Protected against: Short Circuit, Overload, Over
Voltage, Overheating. Convection air cooling. RoHS compliant. MTBF 169.3 Khrs.
`Dimensions (mm): 63W, 125.2H, 113.5D. Weight 1.03Kg.
Standards Safety: UL508, TUV EN60950-1. Vibration: IEC60068-2-6. EMC Emission: EN55022,
CISPR22 Class B, EN61000-3-2, |EN61000-3-3. EMC Immunity: EN61000-4-2, EN61000-
4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, EN61000-4-8, EN61000-4-11, EN55024,
EN61000-6-2, EN50082-2, EN61204-3, SEMI F47, GL Approved.
Description: Mean Well SDR-240-48. INPUT: 100-240VAC 2.6A 50/60 Hz.
OUTPUT: 48V - 5A. “Use copper wire only”. “Maximum surrounding air temperature: 60°C”. “Instructions for
installation in a pollution degree 2 environment”.
Terminal Torque: 7 Lb-in (DC connections at top of PS).Terminal Torque: 4.4 Lb-in (AC connections at bottom of
PS).
+V ADJ: access to small Phillips screw; turn clockwise to increase voltage. Adjustable, 48-55V.
DC OK LED: lights to indicate a DC OK condition.
With just the DC supply connected the ALM (Alarm) LED lights in Red.
Note: Both the switch and the power supply must have their ground terminals connected to earth ground.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 19 of 31
Connecting to Power
After the Switch is mounted, connected, and grounded, use the Terminal Block (Euro Block) to provide DC Power
Inputs P1 and P2.
Warning: Connect the wires to the terminal block before plugging power into the Switch product. Plug the
Terminal Block into the switch before powering on.
1. Insert the negative/positive DC wires into the V- and V+ terminals, respectively.
2. To keep the DC wires from pulling loose, use a small flat-blade screwdriver to tighten the wire-clamp screws
on the front of the Terminal Block connector.
3. Plug the Power adapter plug into AC power at an appropriate AC outlet.
4. Check the SYS LED. If it is ON, the power connection is correct.
Adjusting Power Supply Output Voltage (+V ADJ)
+V ADJ: access to small Phillips screw; turn clockwise to increase voltage. Adjustable, 48-55V.

Lantronix SISTP10x0-3xx-LRT Install Guide
33733 Rev. G https://www.lantronix.com/ Page 20 of 31
LED Descriptions
The front panel LEDs provide switch status checking and monitoring. The three types of LEDs are:
•PWR (Power) LEDs indicate if the switch is powered up correctly.
•SYS (System) LED indicates if the system is ready.
•Port Status LEDs indicate the current status of each port.
The front panel SYS and PWR LEDs are shown and described below. See the PD device manual for its LED
descriptions.
System and Power LEDs
LED
Color
State
Description
SYS
(System)Green
On
Off
The switch is ready.
The switch is not ready.
PWR2 Green
On
Off
The switch is powered on correctly.
The switch is not receiving power from Power 2 (P2).
PWR1 Green
On
Off
The switch is powered on correctly.
The switch is not receiving power from Power 1 (P1).