How to Fix the RTL8152B-VB-CG Adapter’s Limited or No Connectivity Issue

How to Fix the RTL8152B-VB-CG Adapter’s Limited or No Connectivity Issue

The RTL8152B-VB-CG network adapter is commonly used in USB-to-Ethernet adapters, but sometimes it may face issues such as "Limited or No Connectivity," preventing you from accessing the internet. This problem can arise due to various reasons. Below, we will walk through the potential causes of this issue, followed by a step-by-step guide on how to troubleshoot and resolve the issue.

Common Causes of "Limited or No Connectivity" with RTL8152B-VB-CG Adapter:

Driver Issues: Outdated, corrupted, or missing Drivers are one of the most common causes of connectivity problems. If the driver is not properly installed or is incompatible, the adapter will fail to establish a network connection.

Network Configuration Problems: Incorrect settings in the TCP/IP stack, like wrong IP configuration, DNS issues, or incorrect gateway settings, can prevent the adapter from connecting to the internet.

Hardware Issues: Faulty USB ports, cables, or the adapter itself may cause connectivity problems. If there's a physical issue with the hardware, it can lead to intermittent or no connectivity.

Operating System Conflicts: Sometimes, your operating system or its settings may conflict with the adapter, causing it to malfunction.

Router or Network Issues: Problems with the router, such as incorrect settings, network congestion, or temporary outages, can result in limited connectivity.

Step-by-Step Troubleshooting and Fixing the Issue

Step 1: Check the Physical Connection Ensure the Adapter is Properly Connected: Make sure that the RTL8152B-VB-CG adapter is securely plugged into your USB port and connected to the Ethernet cable. Try a Different USB Port: Sometimes the issue is as simple as a malfunctioning USB port. Try plugging the adapter into another port on your computer, preferably a port directly on the computer rather than through a USB hub. Test with Another Ethernet Cable: A damaged or faulty Ethernet cable can also cause connectivity issues. Swap the cable to rule out the possibility of a cable fault. Step 2: Restart Your Computer and Router Restart the Computer: A simple reboot can fix many connectivity problems by refreshing system settings and network connections. Restart the Router: Power cycle your router by turning it off for 10 seconds and turning it back on. This clears temporary issues and allows the router to re-establish connections. Step 3: Update or Reinstall the Drivers Update Drivers: Ensure that you are using the latest drivers for the RTL8152B-VB-CG adapter. Outdated or corrupted drivers are often the main cause of connection issues. Right-click the Start button and choose Device Manager. Locate Network Adapters, and find the RTL8152B-VB-CG device listed. Right-click on it and select Update Driver. Choose Search automatically for updated driver software. If an update is available, it will be installed automatically. Reinstall the Drivers: If updating doesn’t work, reinstall the drivers:

In Device Manager, right-click the adapter and select Uninstall Device.

After uninstalling, unplug the adapter and restart your computer.

Reconnect the adapter and let Windows automatically reinstall the driver.

Alternatively, you can manually download the latest drivers from the manufacturer’s website and install them.

Step 4: Check Network Configuration Settings Release and Renew IP Address: Press Windows + R to open the Run dialog. Type cmd and hit Enter to open the Command Prompt. In the Command Prompt, type the following commands: ipconfig /release ipconfig /renew These commands will release your old IP address and request a new one from your network. Verify IP Configuration: Open Network and Sharing Center by right-clicking the network icon in the taskbar and selecting Open Network & Internet settings. Click on Change adapter settings. Right-click your Ethernet connection (the one using the RTL8152B-VB-CG adapter) and select Properties. Highlight Internet Protocol Version 4 (TCP/IPv4) and click Properties. Ensure that both Obtain an IP address automatically and Obtain DNS server address automatically are selected. Step 5: Disable Power Saving Mode for USB Devices

Windows might disable the adapter to save power, which could cause connectivity issues. To fix this:

Open Device Manager. Expand the Universal Serial Bus controllers section. Right-click each USB Root Hub device, and choose Properties. Go to the Power Management tab and uncheck Allow the computer to turn off this device to save power. Click OK to save the settings. Step 6: Reset TCP/IP Stack Press Windows + R to open the Run dialog. Type cmd and hit Enter to open the Command Prompt. In the Command Prompt, type: netsh int ip reset Press Enter and restart your computer.

This command will reset the TCP/IP stack, which can fix network configuration issues.

Step 7: Test on Another Device or Network Test on Another Computer: If the adapter still doesn't work, try connecting it to another computer. If it works, the issue might be specific to your original system's configuration. Test on a Different Network: If possible, try connecting to a different network to check if the issue is with your router or internet service provider. Step 8: Check for Router Issues Check Router Settings: Ensure the router isn’t blocking the Ethernet connection or experiencing any issues. You might need to access the router’s settings and verify that it is correctly configured to handle your device. Firmware Update: Make sure your router firmware is up-to-date. Sometimes, outdated firmware can cause connectivity issues.

Conclusion

By following these steps, you should be able to resolve the "Limited or No Connectivity" issue with your RTL8152B-VB-CG network adapter. Start with basic troubleshooting, such as checking physical connections, and then proceed to more advanced steps like updating drivers or resetting network configurations. If none of these steps solve the problem, the adapter itself may be faulty and require replacement.