The Atheros AR8152 8158 PCI E Fast Ethernet Controller (NDIS 6.20) driver enables Windows to communicate with your computer’s built-in wired network adapter. It supports Ethernet connectivity for local network access and internet use through a router or modem. When downloading a driver for Windows 11, 10, 8, or 7, check that the package matches your adapter’s hardware ID and Windows version rather than assuming every release supports all four systems.

Key Features

• Wired network communication: Provides the software interface needed for the Atheros controller to send and receive data over an Ethernet connection.
• Fast Ethernet support: Enables connections at up to 100 Mbps where supported by the adapter, cable, and connected network equipment; actual transfer speeds vary.
• Windows network integration: Allows the adapter to work with Windows networking settings, including IP configuration and connection status reporting.
• Adapter configuration and troubleshooting: Makes supported device properties available through Device Manager and may help resolve connectivity problems caused by a missing, damaged, or incompatible driver.

How to Install

1. Identify the adapter and Windows version. Open Device Manager and look under Network adapters or Other devices. Check the device’s Hardware Ids under Properties > Details, then confirm your Windows version and whether it uses a 32-bit or 64-bit system.

1. Download a matching driver package. Choose a release that explicitly supports your hardware and operating system. The NDIS 6.20 label alone does not confirm compatibility with Windows 11 or Windows 10. If the PC has no network access, download the package on another computer and transfer it using a USB drive.

1. Extract and install the driver. If the download is compressed, extract it first. Run the included installer, or right-click the adapter in Device Manager, select Update driver, and choose Browse my computer for drivers to locate the extracted folder.

1. Restart if prompted. Allow installation to finish before restarting. If Windows reports that the package is incompatible, do not force installation; verify the hardware ID and select another supported package.

1. Check the connection. Connect an Ethernet cable, confirm that Device Manager shows the adapter without a warning icon, and test access to your network or a web page. If connectivity still fails, check the cable, router port, and IP settings before reinstalling.

Common Issues and Fixes

• Install fails or rolls back: The Atheros AR8152/8158 package may not run correctly on newer Windows. Run the installer as administrator; if it still fails, use Device Manager > Update driver > Browse > Have Disk and point to the extracted INF. Avoid unsigned or mismatched packages.
• Device not detected: Confirm onboard LAN is enabled in BIOS/UEFI and the PCIe slot is seated. In Device Manager, look for an unknown Ethernet controller; install the AR8152/8158 INF manually. Disable PCIe power saving for the adapter if it disappears after sleep.
• Version conflicts: A Microsoft/generic or older OEM driver can cause Code 10/31 or no link. Uninstall the adapter and delete its driver, reboot, then install the matching NDIS 6.20 package. Use Roll Back Driver if a Windows Update breaks a working install.