RADEON X800 PRO Secondary (Microsoft Corporation - WDDM) Driver

The RADEON X800 PRO Secondary (Microsoft Corporation – WDDM) driver helps Windows recognize and manage the secondary display function associated with the legacy ATI Radeon X800 PRO graphics adapter. It is relevant when you are restoring an older AMD/ATI-based PC, troubleshooting an unidentified display device, or reinstalling a compatible graphics driver.

The “Secondary” label typically refers to an additional display function of the same graphics card, not a separate GPU. Although this device name includes Microsoft’s WDDM designation, driver availability and installation requirements vary by Windows version.

Key Features

• Device recognition: Helps Windows identify the adapter’s secondary display function correctly in Device Manager.
• Display configuration: Enables supported resolution, color, and refresh-rate options, depending on the monitor and driver package.
• Multiple-display support: Works with the adapter’s primary display driver to manage supported multi-monitor configurations.
• Legacy graphics compatibility: Provides the appropriate interface between Windows and supported graphics features; capabilities depend on the operating system and package selected.

How to Install RADEON X800 PRO Secondary (Microsoft Corporation – WDDM) Driver

1. Identify your Windows version and architecture. Check whether your system is 32-bit or 64-bit. For Windows XP, Vista, 7, 8.1, or 10, verify compatibility with the individual package rather than assuming one download supports every version. XP uses a different driver model from WDDM.
2. Confirm the hardware. Open Device Manager, locate the display adapter, and check Properties > Details > Hardware Ids. Match these identifiers to the driver’s supported devices.
3. Choose a compatible package. Before starting a RADEON X800 PRO Secondary (Microsoft Corporation – WDDM) driver download for Windows, review its source, supported hardware, and installation notes. A free download should not require purchasing an unrelated driver-update tool.
4. Prepare and install. Create a restore point where available. Run the supplied installer, or extract the package and use Device Manager > Update driver > Browse my computer for drivers to select the extracted folder.
5. Restart and verify. Reboot, check Device Manager for warnings, and test your display settings. If problems appear, roll back the driver or restore the previous configuration.

Keep the driver updated only when a verified, compatible release addresses your needs. The latest version available may still be a legacy release. For Windows 10/11, do not assume modern driver support exists for this older GPU; confirm compatibility before attempting an update, and avoid forcing an unsupported package.