Black Box Computer Hardware 16 24 Port 10 100 1000 RJ 45 Unmanaged Gigabit Switches User Manual

LGB416A  
LGB424A  
16-/24-Port 10/100/1000 RJ-45 Unmanaged Gigabit Switches  
Connect up to 16 or 24 Gigabit Ethernet, Fast  
Ethernet, or Ethernet devices to your network.  
Auto-negotiation means every port can automatically sense the mode  
and speed of connected network devices.  
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)  
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax  
724-746-0746 • Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence,  
PA 15055-1018 • Web site: www.blackbox.com • E-mail: [email protected]  
Customer  
Support  
Information  
 
NOM Statement  
Normas Oficiales Mexicanas (NOM)  
Electrical Safety Statement  
INSTRUCCIONES DE SEGURIDAD  
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  
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.  
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NOM Statement  
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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Trademarks Used in this Manual  
Trademarks Used in this Manual  
Black Box and the Double Diamond logo are registered trademarks of  
BB Technologies, Inc.  
Any other trademarks mentioned in this manual are acknowledged to be  
the property of the trademark owners.  
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Table of Contents  
Chapter  
Page  
1. Specifications ..........................................................................................7  
2. Overview ..........................................................................................8  
2.1 Introduction ....................................................................................8  
2.2 Features ..........................................................................................8  
2.3 What’s Included..............................................................................8  
2.4 Hardware Description .....................................................................9  
2.4.1 LGB416A............................................................................9  
2.4.2 LGB424A..........................................................................10  
3. Installation  
........................................................................................11  
3.1 Connecting a Switch/Hub to the 16-/24-Port Gigabit Ethernet  
Switch ........................................................................................11  
3.2 Connecting a PC/Other Device(s) to the 16-/24-Port Gigabit  
Ethernet Switch.............................................................................11  
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Chapter 1: Specifications  
1. Specifications  
Buffer Memory — LGB416A: 340 KB;  
LGB424A: 500 KB  
Filtering/Forwarding Rates — 1000 Mbps port: 1,488,000 pps;  
100 Mbps port: 148,000 pps;  
10 Mbps port: 14,880 pps  
Jumbo Frames — 9.6 KB  
MAC Addresses— 8 K  
Standards — IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, IEEE 802.3ab  
1000BASE-T, IEEE 802.3x flow control  
Transmission Media — 10BASE-T CAT3, 4, 5 UTP/STP;  
100BASE-TX: CAT5 UTP/STP;  
1000BASE-TX: CAT5e UTP/STP  
Transmission Method — Store-and-Forward  
Connectors — LGB416A: (16) RJ-45;  
LGB424A: (24) RJ-45  
Indicators — LGB416A: (16) Link/Act LEDs, (16) 1000M LEDs;  
LGB424A: (24) Link/Act LEDs, (24) 1000M LEDs  
Temperature Tolerance — Operating: 32 to 131° F (0 to 55° C);  
Storage: -4 to +194° F (-20 to +90° C)  
Power — 90–260 VAC, 50–60 Hz;  
Consumption: 20 Watts maximum  
Size — 1.7"H x 17.3"W x 8.7"D (4.4 x 44 x 22 cm)  
Weight — LGB416A: 6.4 lb. (2.9 kg);  
LGB424A: 6.6 lb. (3 kg)  
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Chapter 2: Overview  
2. Overview  
2.1 Introduction  
The 10/100/1000 RJ-45 Unmanaged Switches provide 16 or 24 10/100/1000  
Mbps ports. They’re easy to install and provide high performance in an  
environment where trafffic on the network and the number of users increases  
continuously. The switches support the highest speed even when operating in  
full-duplex mode.  
The switches also provide automatic crossover detection on each port. It’s simple  
and friendly to uplink to another switch without a crossover cable.  
Use the switches for medium to large workgroups. It’s easy to upgrade network  
capacity, and you can mount the switches in a 19" rack or cabinet.  
2.2 Features  
• Complies with IEEE 802.3 Ethernet, IEEE 802.3u Fast Ethernet, and IEEE 802.3ab  
Gigabit Ethernet standards.  
• Has 16 or 24 autonegotiating 10/100/1000 ports.  
• Fits in a 19" rack or cabinet.  
• Enables non-blocking and non-head-of-line blocking full wire-speed forwarding.  
• Supports store-and-forward operation.  
• Provides 8K MAC address entry.  
• Supports broadcast storm filtering.  
• All ports provide Auto-MDI/MDI-X crossover.  
• Uses backpressure flow control for half-duplex operation, and IEEE 802.3x for  
full-duplex mode.  
• Smart plug-and-play.  
2.3 What’s Included  
Your package should contain the following items. If anything is missing  
or damaged, contact Black Box Technical Support at 724-746-5500  
• (1) 16- or 24-Port 10/100/1000 RJ-45 Unmanaged Gigabit Switch  
• (1) rackmount kit (includes [2] brackets, [8] screws)  
• (1) AC power cord  
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Chapter 2: Overview  
• This user‘s manual  
2.4 Hardware Description  
2.4.1 LGB416A  
Figures 2-1 and 2-2 show the front and back panel of the 16-port switch. Table  
2-1 describes its components.  
1 2, 3  
4
4
Figure 2-1. LGB416A front panel.  
5
6
Figure 2-2. LGB416A back panel.  
Table 2-1. 16-port switch components.  
Number Component  
Description  
1
Power LED  
Lights when power to the unit is on  
On: Link is on  
2
(16) Link/Act LEDs  
(8) 1000M LEDs  
Flashing: Data present  
On: Link running at 1000 Mbps  
3
Off: Link running at 10/100 Mbps  
4
5
6
(16) RJ-45 connectors  
On/Off switch  
Link to switches/hubs, PCs, servers, or other network devices.  
Press to power on/off the unit.  
3-prong connector  
Attaches to a 90–260 VAC, 50–60 Hz power cord (included).  
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Chapter 2: Overview  
2.4.2 LGB424A  
Figures 2-3 and 2-4 show the front and back panel of the 24-port switch. Table  
2-2 describes its components.  
1 2, 3  
4
4
Figure 2-3. LGB424A front panel.  
5
6
Figure 2-4. LGB424A back panel.  
Table 2-2. 24-port switch components.  
Number Component  
Description  
1
Power LED  
Lights when power to the unit is on  
On: Link is on  
2
(24) Link/Act LEDs  
(24) 1000M LEDs  
Flashing: Data present  
On: Link running at 1000 Mbps  
3
Off: Link running at 10/100 Mbps  
4
5
6
(24) RJ-45 connectors  
On/Off switch  
Link to switches/hubs, PCs, servers, or other network devices.  
Press to power on/off the unit.  
3-prong connector  
Attaches to a 90–260 VAC, 50–60 Hz power cord (included).  
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Chapter 3: Installation  
3. Installation  
3.1 Connecting a Switch/Hub to the 16-/24-Port Gigabit Ethernet Switch  
This switch provides automatic crossover detection for any port, which enables  
you to uplink another switch without using crossover cable.  
Figure 3-1. Switch/hub connection.  
3.2 Connecting a PC/Other Device(s) to the 16-/24-Port Gigabit Ethernet  
Switch  
This switch provides automatic crossover detection for any port, so you can  
connect this switch to PCs, servers, and other network devices without worrying  
whether your cable is a straight-through or crossover cable. The switch will work  
with either cable.  
Figure 3-2. PC/other device(s) connection.  
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Black Box Tech Support: FREE! Live. 24/7.  
Tech support the  
way it should be.  
Great tech support is just 30 seconds away at  
724-746-5500 or blackbox.com.  
About Black Box  
Black Box provides an extensive range of networking and infrastructure products.  
You’ll find everything from cabinets and racks and power and surge protection  
products to media converters and Ethernet switches all supported by free, live 24/7  
Tech support available in 30 seconds or less.  
© Copyright 2011. Black Box Corporation. All rights reserved. Black Box® and the Double Diamond logo  
are registered trademarks of BB Technologies, Inc. Any third-party trademarks appearing in this manual  
are acknowledged to be the property of their respective owners.  
LGB416A, version 1  
724-746-5500 | blackbox.com  
 

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