Linksys SD205 5-Port 10/100 Ethernet Switch User Manual

1. Introduction

The Linksys SD205 is a compact and reliable 5-port 10/100 Ethernet switch designed to expand your network connectivity. This unmanaged switch provides five auto-sensing 10/100 Mbps Ethernet ports, allowing you to connect multiple devices such as computers, printers, and network-attached storage (NAS) to your local area network (LAN). Its plug-and-play design ensures easy installation without the need for complex configuration.

This manual provides essential information for setting up, operating, maintaining, and troubleshooting your Linksys SD205 switch.

2. Package Contents

Please verify that your package contains the following items:

Linksys SD205 5-Port 10/100 Ethernet Switch
Power Adapter
User Manual (this document)

If any items are missing or damaged, please contact your retailer or Linksys support.

3. Product Features

5 Fast Ethernet Ports: Provides five 10/100 Mbps auto-sensing RJ-45 ports.
Auto MDI/MDI-X: Eliminates the need for crossover cables.
Plug-and-Play: No configuration required for easy setup.
IEEE 802.3/802.3u Compliance: Adheres to industry standards for reliable networking.
Compact Design: Small footprint for flexible placement.
LED Indicators: Provides status information for power and port activity.

4. Setup

Follow these steps to set up your Linksys SD205 switch:

4.1. Placement

Place the switch on a flat, stable surface.
Ensure adequate ventilation around the device to prevent overheating.
Keep the switch away from direct sunlight, heat sources, and moisture.

4.2. Connecting the Switch

Connect the Power Adapter: Plug the included power adapter into the power port on the back of the switch and then into a standard electrical outlet. The Power LED on the front panel should illuminate.
Connect Network Devices: Use standard Ethernet cables (Cat5e or better recommended) to connect your network devices (e.g., computer, router, game console) to any of the five RJ-45 ports on the switch.
Verify Connections: Once a device is connected and active, the corresponding port LED on the switch will illuminate, indicating a successful link.

Linksys SD205 5-Port 10/100 Ethernet Switch with cables connected

Figure 1: Linksys SD205 Switch with connected devices. This image illustrates the compact design and the ports for connecting Ethernet cables and the power adapter.

5. Operating the Switch

The Linksys SD205 is an unmanaged switch, meaning it operates automatically without requiring any user configuration. Once connected, it will immediately begin forwarding network traffic between connected devices.

5.1. LED Indicators

The front panel of the switch features LED indicators to provide status information:

Power LED:
- Solid Green: The switch is powered on and operating normally.
- Off: The switch is not receiving power.
Link/Act LEDs (per port):
- Solid Green: A device is successfully connected to the port.
- Flashing Green: Data is being transmitted or received through the port.
- Off: No device is connected, or the connected device is not active.

6. Maintenance

The Linksys SD205 switch requires minimal maintenance to ensure optimal performance.

Cleaning: Use a soft, dry cloth to clean the exterior of the switch. Do not use liquid or aerosol cleaners.
Ventilation: Ensure that the ventilation openings are not blocked to prevent overheating.
Environmental Conditions: Operate the switch within its specified temperature and humidity ranges (refer to Specifications section).
Firmware: This unmanaged switch does not require user-initiated firmware updates.

7. Troubleshooting

If you encounter issues with your Linksys SD205 switch, refer to the following common problems and solutions:

7.1. No Power

Symptom: The Power LED is off.
Solution:
- Ensure the power adapter is securely connected to the switch and a working electrical outlet.
- Try a different electrical outlet.
- Verify the power adapter is the correct one supplied with the switch.

7.2. No Link Light for a Connected Device

Symptom: The Link/Act LED for a connected port is off.
Solution:
- Ensure the Ethernet cable is securely plugged into both the switch port and the device.
- Try a different Ethernet cable.
- Verify the connected device is powered on and its network adapter is functioning correctly.
- Try connecting the device to a different port on the switch.

7.3. Slow Network Speed

Symptom: Network performance is slower than expected.
Solution:
- Ensure all connected devices and cables support 100 Mbps speeds for optimal performance.
- Check for excessive network traffic or bandwidth-intensive applications running on connected devices.
- Restart the switch and connected devices.

8. Specifications

Technical specifications for the Linksys SD205 5-Port 10/100 Ethernet Switch:

Feature	Description
Model	SD205
Ports	5 x 10/100 Mbps RJ-45 Auto-Sensing
Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3x (Flow Control)
Switching Capacity	1 Gbps (non-blocking)
MAC Address Table	1K entries
Forwarding Rate	10 Mbps: 14,880 pps; 100 Mbps: 148,800 pps
Power Input	External Power Adapter (e.g., 5V DC, 1A)
Dimensions (L x W x H)	Approximately 7.32 x 4.69 x 3.54 inches (18.6 x 11.9 x 9.0 cm) - Based on package dimensions, actual device may be smaller.
Weight	Approximately 1.06 pounds (0.48 kg) - Based on item weight, actual device may be lighter.
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20°C to 70°C (-4°F to 158°F)
Operating Humidity	10% to 90% non-condensing

Note: Specifications are subject to change without notice.

9. Warranty Information

Linksys products are backed by a limited warranty. For detailed information regarding the warranty period and terms applicable to your Linksys SD205 switch, please refer to the warranty card included with your product or visit the official Linksys website. Keep your purchase receipt as proof of purchase for warranty claims.

10. Technical Support

If you require further assistance or encounter issues not covered in this manual, please contact Linksys Technical Support.

Online Support: Visit the official Linksys support website for FAQs, knowledge base articles, and driver downloads. www.linksys.com/support
Telephone Support: Refer to the Linksys website for regional contact numbers and operating hours.

When contacting support, please have your product model (SD205) and serial number ready.

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Linksys SD205