The ASIX AX88772A USB2.0 to Fast Ethernet Adapter adds a wired network connection through a USB port. Its driver allows Windows to recognize the adapter and communicate with the ASIX network controller, enabling Ethernet access for internet browsing, local file transfers, and other network tasks.

Key Features

• USB-to-Ethernet connectivity: Enables Windows to use the adapter as a wired network interface through a USB 2.0 connection.
• Fast Ethernet support: Supports the controller’s 10/100 Mbps Ethernet capabilities. Actual transfer speeds depend on the network equipment, cabling, and connection conditions.
• Windows network integration: Makes the adapter available through standard Windows networking tools, where you can check connection status and configure IP settings.
• Driver options for multiple Windows versions: When selecting a download for Windows 11, 10, 8, or 7, check that the package explicitly supports your operating system and system architecture.

How to Install

1. Check your Windows version and adapter model. Confirm that your hardware uses the ASIX AX88772A controller, then check whether your Windows installation is 32-bit or 64-bit. Similar-looking USB Ethernet adapters may require different drivers.

1. Download the matching driver package. Choose a package that lists support for your Windows version and architecture. If the computer has no working internet connection, download it on another device and transfer it using a USB drive.

1. Extract and install the driver. Unzip the download if necessary. If an installer is included, run it and follow its prompts, including any instructions about when to connect the adapter.

1. Use Device Manager if there is no installer. Connect the adapter, open Device Manager, and locate it under Network adapters or Other devices. Right-click the entry, select Update driver, choose Browse my computer for drivers, and point Windows to the extracted driver folder.

1. Verify the Ethernet connection. Restart if prompted, then connect an Ethernet cable between the adapter and your router or network switch. Check that Windows detects the wired connection. If it does not, inspect Device Manager for warnings and try another USB port or Ethernet cable before reinstalling the driver.

Common Issues and Fixes

• Install fails or rolls back: Run the installer as administrator and use the ASIX/Windows Update driver for your exact OS architecture. Remove any bundled CD driver first; if using an older unsigned package, check driver signature enforcement.
• Adapter not detected: Try a different USB 2.0 port directly on the PC, not a hub. In Device Manager, look for an unknown device or “AX88772A USB2.0 to Fast Ethernet Adapter,” uninstall it, then scan for hardware changes. Confirm USB VID/PID `0B95:7720`.
• Version conflicts or dropped link: Uninstall all existing ASIX AX88772/88772A drivers, select “Delete driver software,” reboot, and install one WHQL x64 driver. Prevent Windows Update from replacing it if needed, and verify link speed/duplex in adapter properties.