Black Box LGB2118A User guide

24/7 TECHNICAL SUPPORT AT 1.877.877.2269 OR VISIT BLACKBOX.COM
STARTUP GUIDE
GBE WEB
SMART
SWITCHES
LGB2118A, LGB2126A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Reset
System
26-PORT GbE
WEB SMART SWITCH

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TABLE OF CONTENTS
DEFAULT SETTINGS ......................................................................................................................................................................... 3
SAFETY INFORMATION.................................................................................................................................................................... 4
RELATED PUBLICATIONS................................................................................................................................................................. 5
1. SPECIFICATIONS........................................................................................................................................................................... 6
2. OVERVIEW...................................................................................................................................................................................... 8
2.1 Introduction...............................................................................................................................................................................................8
2.2 Front View of the Switch..........................................................................................................................................................................8
2.3 Rear View of the Switch...........................................................................................................................................................................8
2.4 LED Descriptions......................................................................................................................................................................................9
2.5 Reset Button ...........................................................................................................................................................................................10
3. INSTALLING THE SWITCH.......................................................................................................................................................... 11
3.1 What’s Included ...................................................................................................................................................................................... 11
3.2 Mounting the Switch on a Wall .............................................................................................................................................................11
3.3 Mounting the Switch on a Desk or Shelf ..............................................................................................................................................12
3.4 Connecting the AC Power Cord ............................................................................................................................................................12
3.5 Installing SFP Modules..........................................................................................................................................................................13
4. CONFIGURATION ........................................................................................................................................................................ 14
4.1 Initial Switch Configuration Using Web Browswers ............................................................................................................................14
4.2 Initial Switch Configuration Procedure ................................................................................................................................................14
5. TROUBLESHOOTING................................................................................................................................................................... 16
APPENDIX A. REGULATORY INFORMATION ................................................................................................................................ 17
A.1 FCC Statement .......................................................................................................................................................................................17
A.2 NOM Statement .....................................................................................................................................................................................18
APPENDIX B. DISCLAIMER/TRADEMARKS ................................................................................................................................. 19
B.1 Disclaimer ...............................................................................................................................................................................................19
B.2 Trademarks Used in this Manual ..........................................................................................................................................................19

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DE FAULT SETTINGS
The switch’s default values are listed below:
IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.254
Username: admin
Password: <none> (Just press the Enter key.)

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SAFETY INFORMATION
SAFETY INFORMATION
CAUTION: Circuit devices are sensitive to static electricity, which can damage their delicate electronics. Dry weather conditions
or walking across a carpeted floor may cause you to acquire a static electrical charge.
To protect your device, always:
Touch the metal chassis of your computer to ground the static electrical charge before you pick up the circuit device.
Pick up the device by holding it on the left and right edges only.
If you need to connect this device to an outdoor device, add an arrester on the cable between the outdoor device and this device.
NOTE: The switch is indoor device; if it will be used in an outdoor environment or connects with an outdoor device, you must use
a lightning arrester to protect the switch.
WARNING:
Self-demolition on the product is strictly prohibited. Damage caused by self-demolition will be charged repairing fees.
Do not place product at outdoor or sandstorm..
Before installation, make sure the input power supply and product specifications are compatible with each other.
To reduce the risk of electric shock, disconnect all AC or DC power cord and RPS cables to completely remove power from the unit.
Before importing/exporting a configuration, make sure the firmware version is always the same.
After a firmware upgrade, the switch will replace the configuration automatically with the latest firmware version.
WARNING: EYE HAZARD! The SFP modules are Class 1 laser devices. Do not look direcly at the beam coming from the transmit
port.

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RELATED PUBLICATIONS/REVISION HISTORY
RELATED PUBLICATIONS
The following publication gives specific information on how to operate and use the management functions of the switch:
GUI User Guide
To download the user guide from blackbox.com:
1. Go to www.blackbox.com
2. Enter the part number in the search box (for example, LGB2118A or LGB2126A).
3. Click on the product in the “Products” page.
4. Click on the “Support” tab on the product page and select the document you wish to download.

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CHAPTER 1: SPECIFICATIONS
GBE WEB SMART SWITCH — 18-PORT (LGB2118A)
APPROVALS FCC Part 15 Class A, CE, RoHS
STANDARDS IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3x, IEEE 802.1q
HARDWARE PERFORMANCE
DISTANCE Copper: 100 m (328 ft.) maximum;
With optional SFP Optical Transceivers:
LFP411: Multimode fiber: 550 m (1804.4 ft.) maximum;
LFP413: Single-mode fiber: 10 km (6.2 mi.) maximum;
LFP414: Single-mode fiber: 30 km (18.6 mi.) maximum
MAC ADDRESSES 8 K
MECHANICAL
CONNECTORS (16) RJ-45, (2) SFP ports
INDICATORS LEDs: Per unit: (1) PWR, (1) CPU;
Per port: (1) LINK/ACT, (1) 10/100/1000 Mbps;
Also Ports 17–18: (1) SFP
USER CONTROLS (1) Mode button
POWER Voltage: 100–240 VAC:
Frequency: 50–60 Hz, autosensing
DIMENSIONS 1.45" H (1U) x 8.57" W x 5.86" D (3.7 x 21.8 x 14.9 cm)
WEIGHT 4.63 lbs. (2.1 kg)
ENVIRONMENTAL Operating Temperature: 32 to 104° F (0 to 40° C);
Humidity: 10to 90% noncondensing

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CHAPTER 1: SPECIFICATIONS
GBE WEB SMART SWITCH - (24) RJ-45, (2) SFP (LGB2126A)
APPROVALS FCC Part 15 Class A, CE, RoHS
HARDWARE PERFORMANCE
FILTERING/FORWARDING RATE 38.688 Mpps
SWITCHING CAPACITY 52 Gbps
MAC TABLE 8 K
JUMBO FRAMES 9216 bytes
MECHANICAL
CONNECTORS (24) 10/100/1000BASE-T RJ-45; (2) SFP; (1) DB9 console
INDICATORS (1) System LED;
(18) Port Status LEDs
USER CONTROLS (1) Reset Pushbutton
POWER Voltage: 100–240 VAC:
Frequency: 50–60 Hz
DIMENSIONS 1.75 (1U)”H x 11”W x 6.5”D (4.4 x 28 x 16 cm)
WEIGHT 5.5 lb. (2.5 kg)
ENVIRONMENTAL Operating Temperature: 32 to 104° F (0 to 40° C):
Storage Temperature: -4 to +158° F (-20 to +70° C);
Operating Humidity: 10 to 90% noncondensing
SOFTWARE FEATURES
LAYER 2 SWITCHING Spanning Tree Protocol, Link Aggregation Control Protocol, VLAN, DHCP Relay, IGMP Snooping, IGMP Querier, IGMP Proxy,
MLD v1/v2 Snooping, multicast VLAN
MANAGEMENT Port mirroring, IEEE 802.1ab (LLDP) web GUI interface, dual image, UPnP, DHCP server, remote monitoring, SNMP, firmware upgrade,
NTP, HTTP/HTTPs, DHCP client, cable diagnostics, Syslog, Telnet client, SSH, IPv6
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
QOS Hardware queue, scheduling, classification, rate limiting
SECURITY Secure Shell (SSH) Secure Sockets Layer (SSL), IEEE 802.1X, Layer 2 Isolation Private VLAN Edge, port security, IP source guard,
RADIUS/TACACS+, storm control, DHCP snooping, loop protection ACLs
VLAN SUPPORT Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs), Port-based VLAN, 802.1Q tag-based VLAN, MAC-based VLAN,
Management VLAN, Private VLAN Edge (PVE), Q-in-Q (double tag) VLAN, Voice VLAN, GARP VLAN Registration Protocol (GVRP)

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CHAPTER 2: OVERVIEW
2.1 INTRODUCTION
This user guide describes how to install, configure, and troubleshoot the 18- or 26-Port GbE Web Smart Switch.
By reading this user guide, users can perform the following tasks:
Check the switch status by reading the LED behavior
Reset the switch or to restore the switch to factory defaults
Install the switch
Use a Web browser to initially configure the switch
Troubleshoot the switch functions
2.2 FRONT VIEW OF THE SWITCH
10/100/1000
RJ-45 ports
Reset
button
System
LED
Port Status
LEDs
100/1000
SFP ports
FIGURE 2-1. FRONT PANEL OF THE LGB2126A SWITCH
NOTE: The LGB2118A looks similar, but it has 16 10/100/1000 RJ-45 ports and 2 100/1000 SFP ports.
2.3 REAR VIEW OF THE SWITCH
100–240 VAC
power connector
FIGURE 1-2. BACK PANEL OF THE LGB2118A OR LGB2126A SWITCH

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CHAPTER 2: OVERVIEW
2.4 LED DESCRIPTIONS
The LEDs on the front panel provide users with switch status checking and monitoring. There are two types of LEDs as follows:
System LED: indicates if the switch is powered up correctly or not.
Port Status LEDs: indicate the current status of each port. Users can check these LEDs to understand the port status.
The following table details the functions and descriptions of various LED indicators.
TABLE 2-1. SYSTEM LED
LED COLOR STATE DESCRIPTION
System Green ON The switch is powered on correctly
OFF The switch is not receiving power
TABLE 2-2. PORT STATUS LEDS
LED COLOR STATE STATUS
RJ-45 ports
Green ON The port is enabled and established a link to connected device, and the connection speed
is 1000 Mbps.
Green Blinking The port is transmitting/receiving packets, and the connection speed is 1000 Mbps.
Amber ON The port is enabled and established a link to connected device, and the connection speed
is 10/100 Mbps.
Amber Blinking The port is transmitting/receiving packets, and the connection speed is 10/100 Mbps.
—OFF The port has no active network cable connected, or it is not established a link to a connected
device. Otherwise, the port may have been disabled through the switch user interface.
SFP ports
Green ON The port is enabled and established a link to connected device, and the connection speed
is 1000 Mbps.
Green Blinking The port is transmitting/receiving packets, and the connection speed is 1000 Mbps.
Amber ON The port is enabled and established a link to connected device, and the connection speed
is 100 Mbps.
Amber Blinking The port is transmitting/receiving packets, and the connection speed is 100 Mbps.
—OFF The port has no active network cable connected, or it is not established a link to connected
device. Otherwise, the port may have been disabled through the switch user interface.

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CHAPTER 2: OVERVIEW
2.5 RESET BUTTON
By pressing the Reset Button for certain period of time, users can perform the following tasks.
Reset the Switch to reboot and get the switch back to the previous configuration settings saved.
Restore the Switch to Factory Defaults to restore the original factory default settings back to the switch.
NOTE: According to the table below, users can easily judge which task is being performed by reading the LED behaviors while
pressing the Reset button. Once the LED behaviors are correctly displayed, users may just release the button.
TABLE 2-3. RESET BUTTON
TASK TIME TO PRESS THE BUTTON SYS LED BEHAVIOR PORT STATUS LED BEHAVIOR
Reset the Switch 2–7 seconds Blinking Green All LEDs light OFF
Restore to Defaults 7–12 seconds Blinking Green All LEDs stay ON

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CHAPTER 3: HARDWARE DESCRIPTION
3.1 WHAT’S INCLUDED
Your switch package should include the following items. If anything is missing or damaaged, contact Black Box Technical Support
at 877-877-2269 or [e-mail]
LGB2118A or LGB2126A Switch
(1) AC power cord
(4) adhesive rubber feet
This quick installation guide
NOTE: The switch is an indoor device. If it is to be used with outdoor devices such as outdoor IP cameras or outdoor WiFi APs,
then we strongly recommend that you install a surge protector or surge suppressor to protect the switch.
3.2 MOUNTING THE SWITCH ON A WALL
STEP 1: Install screws (not included) on the appropriate location on the wall, and be aware of the dimensional limitation of the
screws.
2.7 mm
4.4 mm–6.8 mm
FIGURE 3-1. INSTALL SCREWS ON THE WALL
STEP 2: Attach the switch securely to the wall.
FIGURE 3-2. ATTACH THE SWITCH TO THE WALL

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CHAPTER 3: INSTALLING THE SWITCH
3.3 MOUNTING THE SWITCH ON A DESK OR SHELF
STEP 1: Verify that the workbench is sturdy and reliably grounded.
STEP 2: Attach the four adhesive rubber feet to the bottom of the switch.
FIGURE 3-3. ATTACHING THE RUBBER FEET
3.4 CONNECTING THE AC POWER CORD
STEP 1: Connect the AC power cord to the AC power receptacle of the switch.
STEP 2: Connect the other end of the AC power cord to the AC power outlet.
STEP 3: Check the SYS LED. If it is ON, the power connection is correct.
FIGURE 3-4. CONNECTING THE AC POWER CORD

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CHAPTER 3: INSTALLING THE SWITCH
3.5 INSTALLING SFP MODULES
You can install or remove an SFP module from a SFP port without having to power off the switch.
STEP 1: Insert the module into the SFP port.
STEP 2: Press firmly to ensure that the module seats into the connector.
FIGURE 3-5. INSTALLING AN SFP MODULE INTO AN SFP PORT
NOTE: The SFP ports use UL Listed Optional Transceivers, Rated 3.3Vdc, Laser Class 1. A list of compatible SPF modules is in the
table below.
The LGB2118A or LGB2126A switch supports the Small Form Factor Pluggable (SFP+) transceiver slots on ports 17–18
or 25–26.
The following table shows a list of Black Box transceiver types that have been tested with the switch.
TABLE 3-1. COMPATIBLE SFP/SFP+ MODULES
PRODUCT CODE DESCRIPTION
LFP411 SFP, 1250-Mbps Fiber with Extended Diagnostics, 850-nm Multimode, 550 m LC
LFP412 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1310-nm Multimode, 2 km LC
LFP413 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 10 km LC
LFP414 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 30 km LC
LFP415 SFP with SerDes Interface, 1250 Mbps, RJ45, 1000BASE-T, Extended Diagnostics
LFP416 SFP with SGMII Interface, 1250 Mbps, RJ45, 10/100/1000BASE-T, Extended Diagnostics
LFP417 SFP with SerDes Interface, 1250 Mbps, RJ45, 1000BASE-T, Extended Diagnostics
LFP418 SFP, 1250-Mbps Fiber with Extended Diagnostics, 1550-nm Single-Mode, 80 km, LC
LFP420 SFP, 1250-Mbps Simplex Fiber with Extended Diagnostics, 1550-nm TX, 1310-nm RX, Single-Mode, 10 km, LC
LFP421 SFP, 1250-Mbps Simplex Fiber with Extended Diagnostics, 1310-nm TX, 1550-nm RX, Single-Mode, 10 km, LC
LFP401 SFP, 155-Mbps Fiber with Extended Diagnostics, 850-nm Multimode, 2 km, LC
LFP402 SFP, 155-Mbps Fiber with Extended Diagnostics, 1310-nm Multimode, 2 km, LC
LFP403 SFP, 155-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 30 km, LC
LPF404 SFP, 155-Mbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, 60 km, LC

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CHAPTER 4: CONFIGURATION
4.1 INITIAL SWITCH CONFIGURATION USING WEB BROWSERS
After powering up the switch for the first time, you can perform the initial switch configuration using a web browser. For managing
other switch features, refer to the Web interface user guide for details.
To begin with the initial configuration stage, you need to reconfigure your PC’s IP address and subnet mask so as to make sure the
PC can communicate with the switch. After changing the PC’s IP address (for example, 192.168.1.250), then you can access the
Web interface of the switch using the switch’s default IP address as shown below.
NOTE:
The factory default IP address of the switch is 192.168.1.1
The factory default Subnet Mask of switch is 255.255.255.0
4.2 INITIAL SWITCH CONFIGURATION PROCEDURE
The initial switch configuration procedure is as follows:
STEP 1. Power up the PC that you will use for the initial configuration. Make sure the PC has an Ethernet RJ-45 connector to be
connected to the switch via standard Ethernet LAN cable.
STEP 2. Reconfigure the PC’s IP address and Subnet Mask as below, so that it can communicate with the switch. The method to
change the PC’s IP address, for example, for a PC running Windows®7/8.x/10, is as follows:
STEP 2A: Type “network and sharing“ into the Search box in the Start Menu.
STEP 2B: Select Network and Sharing Center.
STEP 2C: Click on Change adapter settings on the left of the PC screen.
NOTE: Users can also skip step 1 to 3, by pressing WinKey+R and type ”ncpa.cpl” command to get to step 4 directly.
STEP 2D: Right-click on your local adapter and select Properties.
STEP 2E: In the Local Area Connection Properties window, highlight Internet Protocol Version 4 (TCP/IPv4) then click the
Properties button.
NOTE: Record all your PC’s current IP settings to be able to restore them later.
STEP 2F: Select the radio button “Use the following IP address” and enter in the IP for the PC (e.g. any IP address not in use, and
in between 192.168.1.2 and 192.168.1.254), Subnet mask (e.g. 255.255.255.0), and Default gateway that corresponds with your
network setup. Then enter your Preferred and Alternate DNS server addresses.
STEP 2G: Click OK to change the PC’s IP address.
STEP 3: Power up the switch to be initially configured, and wait until it has finished its start-up processes.
STEP 4: Connect the PC to any port on the switch using a standard Ethernet cable, and check the port LED on the switch to make
sure the link status of the PC is OK.
STEP 5. Run your Web browser on the PC, enter the factory default IP address to access the switch’s Web interface.
If your PC is configured correctly, you will see the login page of the switch as shown in the following figure.
Login
Username
Password
FIGURE 4-1. WEB INTERFACE LOGIN PAGE

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CHAPTER 4: CONFIGURATION
If you do not see the login page, please perform the following steps:
Refresh the web page.
Check to see if there is an IP conflict issue.
Clean browser cookies and temporary internet files.
Check your PC settings again and repeat step 2.
STEP 6: Enter the factory default username and password in login page. Click “Login” to log into the switch.
NOTE:
The factory default Username of the switch is admin.
There is no factory default Password of the switch (just press the Enter key).

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CHAPTER 5: TROUBLESHOOTING
The following table provides information for users to easily troubleshoot problems by taking actions based on the suggested
solutions.
TABLE 5-1. TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE SUGGESTED SOLUTIONS
System LED is OFF The switch is not receiving
power
1. Check if correct power cord is connected firmly to the switch and to the AC outlet
socket.
2. Perform power cycling the switch by unplugging and plugging the power cord
back into the switch.
3. If the LED is still off, try to plug the power cord into different AC outlet socket
to make sure the correct AC source is supplied.
Port Status LED is OFF The port is not connected
or the port is not working
1. Check if the cable connector plug is firmly inserted and locked into the port
at both the switch and the connected device.
2. Make sure the connected device is up and running correctly.
3. If the symptom still exists, try a different cable or a different port, to identify
if it is related to the cable or specific port.
4. Check if the port is disabled in the configuration settings via the web user
interface.

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APPENDIX A: REGULATORY INFORMATION
A.1 FCC STATEMENT
This equipment has been 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 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 his own expense.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate
the equipment.
Shielded cables must be used with this equipment to maintain compliance with radio frequency energy emission regulations and
ensure a suitably high level of immunity to electromagnetic disturbances.
All power supplies are certified to the relevant major international safety standards.

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APPENDIX A: REGULATORY INFORMATION
A.2 NOM STATEMENT
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de la tina de baño, lavabo, sótano mojado o cerca de
una alberca, etc.
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación.
Todo otro servicio deberá ser referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso. La colocación del aparato eléctrico
sobre una cama, sofá, alfombra o superficie similar puede bloquea la ventilación, no se debe colocar en libreros o gabinetes que
impidan el flujo de aire por los orificios de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros
aparatos (incluyendo amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como
se indique en el aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados
sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato;o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

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APPENDIX B: DISCLAIMER/TRADEMARKS
B.1 DISCLAIMER
Black Box Corporation shall not be liable for damages of any kind, including, but not limited to, punitive, consequential or cost of cover
damages, resulting from any errors in the product information or specifications set forth in this document and Black Box Corporation
may revise this document at any time without notice.
B.2 TRADEMARKS USED IN THIS MANUAL
Black Box and the Black Box logo type and mark are registered trademarks of Black Box Corporation.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

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