1. Introdución
The BUFFALO Giga Switching Hub LSW3-GT-24NSR is a 24-port Gigabit Ethernet switch designed for high-speed network environments. It is ideal for small to medium-sized offices and workplaces requiring robust and reliable network connectivity. This device supports full Gigabit speeds across all ports, ensuring efficient data transfer.
Key features include a fanless design for silent operation and enhanced reliability, as well as a loop detection function to prevent network disruptions caused by accidental network loops.
2. Información de seguridade
Please read and understand the following safety precautions before using the device to prevent injury or damage.
- Fonte de alimentación: Use só o adaptador de corrente fornecido. Asegúrese de que a toma de corrente cumpra co voltaxe especificado.tage requisitos.
- Ventilación: Non bloquees as aberturas de ventilación. Asegúrate de que haxa un fluxo de aire axeitado arredor do dispositivo para evitar o sobrequecemento.
- Ambiente: Avoid exposing the device to water, high humidity, extreme temperatures, or direct sunlight.
- Manexo: Do not drop or subject the device to strong impacts. Do not attempt to open or repair the device yourself. Refer all servicing to qualified personnel.
- Cables: Ensure all network cables are properly connected and secured.
3. Contido do paquete
Verifica que todos os elementos estean presentes no paquete:
- BUFFALO Giga Switching Hub LSW3-GT-24NSR Unit
- Cable de alimentación
- Rack Mount Brackets (if included with your model)
- Pés de goma (para colocación no escritorio)
4. Configuración
4.1 Instalación física
The LSW3-GT-24NSR can be installed on a desktop or mounted in a 19-inch equipment rack.
Colocación do escritorio:
- Attach the included rubber feet to the bottom of the unit to prevent slipping and provide stability.
- Place the unit on a flat, stable surface with adequate ventilation.
Montaxe en rack:
- Attach the rack mount brackets to the sides of the unit using the provided screws.
- Secure the unit into a standard 19-inch equipment rack using appropriate rack screws (not included).
4.2 Conexión de cables de rede
Connect your network devices (computers, servers, other switches) to any of the 24 RJ-45 ports on the front panel using standard Ethernet cables (Category 5e or higher recommended for Gigabit speeds).

Figura 1: Panel frontalview with 24 Ethernet Ports and Status LEDs.
4.3 Conexión de enerxía
- Connect the power cable to the AC IN port on the rear of the device.
- Enchufe o outro extremo do cable de alimentación nunha toma de corrente adecuada.
- The device will power on automatically. The POWER LED on the front panel should illuminate.

Figura 2: Panel traseiroview with AC IN Power Port.
5. Instrucións de funcionamento
5.1 Indicadores LED
The front panel features several LED indicators to monitor the status of the switch and its ports.

Figura 3: detallada view of LED Indicators and Loop Detection Switch.
| Nome LED | Estado | Descrición |
|---|---|---|
| POTENCIA | On | O dispositivo está acendido. |
| ENLACE / ACT (por porto) | On | A network device is connected and a link is established. |
| Intermitente | Os datos están a ser transmitidos ou recibidos a través do porto. | |
| 1000/100/10M (por porto) | Verde | Port is operating at 1000 Mbps (Gigabit Ethernet). |
| Laranxa | Port is operating at 100 Mbps (Fast Ethernet). | |
| Desactivado | Port is operating at 10 Mbps (Ethernet). | |
| LOOP DETECT | On | A network loop has been detected. |
5.2 Loop Detection Function
The LSW3-GT-24NSR features a hardware switch for enabling or disabling the loop detection function. This function helps prevent network instability caused by accidental network loops.

Figure 4: Loop Detection Switch (ON/OFF).
- ACTIVADO: Loop detection is active. If a loop is detected, the corresponding port will be automatically shut down to prevent network broadcast storms, and the LOOP DETECT LED will illuminate.
- OFF: Loop detection is disabled.
It is recommended to keep the loop detection function ON for network stability.
6. Mantemento
6.1 Limpeza do dispositivo
To maintain optimal performance, periodically clean the exterior of the switch.
- Desconecte o cable de alimentación antes de limpar.
- Use un pano suave e seco para limpar a superficie.
- Do not use liquid cleaners, aerosols, or solvents, as these may damage the casing ou compoñentes internos.
6.2 Consideracións ambientais
Ensure the device is operated within its specified environmental conditions:
- Temperatura: 0 °C a 40 °C (32 °F a 104 °F)
- Humidade: 10% a 85% (sen condensación)
7 Solución de problemas
If you encounter issues with your BUFFALO Giga Switching Hub, refer to the following common problems and solutions.
7.1 Sen enerxía
- Síntoma: O LED POWER está apagado.
- Solución: Check if the power cable is securely connected to both the device and the power outlet. Ensure the power outlet is functional.
7.2 No Link or Slow Speed on a Port
- Síntoma: The LINK/ACT LED for a connected port is off, or the 1000/100/10M LED indicates a lower speed than expected (e.g., 100M instead of 1000M).
- Solución:
- Verifique que o cable Ethernet estea conectado correctamente en ambos extremos.
- Try a different Ethernet cable. Ensure it is a Category 5e or higher cable for Gigabit speeds.
- Conecta o dispositivo a un porto diferente do conmutador.
- Check the network adapter settings on the connected device (computer, server) to ensure it is configured for auto-negotiation or the correct speed.
7.3 Network Instability / LOOP DETECT LED is On
- Síntoma: The LOOP DETECT LED is illuminated, and network performance is degraded or unstable.
- Solución:
- A network loop has been detected. This typically occurs when two ports on the same switch (or different switches) are connected to each other, creating an infinite data path.
- Carefully inspect your network cabling to identify and remove any redundant connections that form a loop.
- If the loop detection switch is ON, the affected port will be automatically shut down. Once the loop is resolved, the port should resume normal operation.
8. Especificacións
| Característica | Descrición |
|---|---|
| Marca | BÚFALO |
| Número de modelo | LSW3-GT-24NSR |
| Conta de portos | 24 x 10/100/1000BASE-T portos RJ-45 |
| Capacidade de conmutación | 48 Gbps (Non-blocking) |
| Taxa de reenvío | 35.7 Mpps |
| Tamaño da táboa de enderezos MAC | 8K entradas |
| Soporte de marco Jumbo | Ata 9 KB |
| Características | Auto-MDI/MDIX, Auto-Negotiation, Loop Detection Function, Fanless Design |
| Fonte de alimentación | Alimentación interna de CA |
| Dimensións (ancho x profundo x alto) | (Specific dimensions not provided in source, typical for 1U rackmount) |
| Peso | (Specific weight not provided in source) |
| Temperatura de funcionamento | 0°C a 40°C |
| Humidade de funcionamento | 10% a 85% (sen condensación) |
9. Garantía e soporte
This BUFFALO product is covered by a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official BUFFALO websitio web para obter información detallada sobre os termos e condicións da garantía.
For technical support, product registration, or further assistance, please visit the official BUFFALO support websitio web ou póñase en contacto co seu departamento de atención ao cliente. A información de contacto adoita atoparse na páxina web do fabricante websitio ou na embalaxe do produto.