Before running any driver installation file (.exe or .msi) on your system, you can easily check if it is officially verified: the downloaded installer file. Select Properties from the context menu. Look for the Digital Signatures tab.

If the file is a .zip , extract it to a known location. Run Installer: Run the setup.exe or install.exe file.

To ensure you are using a verified and safe driver, follow these steps sourced from manufacturer and official support guides:

Visit the official Realtek Downloads Center. Search for your chipset family (e.g., RTL8111, RTL8125) and download the "Diagnostic Program" or "Executable Installer."

This is the safest method. Use the support site for your PC's brand (like Dell, HP, Lenovo) or for your motherboard if you built your own PC. These OEMs provide drivers validated for your specific system.

Change this from "Auto Negotiation" to your maximum service speed (e.g., 1.0 Gbps Full Duplex or 2.5 Gbps Full Duplex ) if your switch or router supports it.

With a deep breath, he double-clicked. A small, gray window appeared:

This means the driver failed to start. Uninstall the driver via Device Manager, reboot, and run the verified installer again.

The term means the installer has passed security checks, contains a valid digital signature, and matches the official release from the hardware manufacturer. Why You Need a Verified Installer