Radeon X1550 64-bit Secondary (Microsoft Corporation - WDDM) Driver

The Radeon X1550 64-bit Secondary (Microsoft Corporation – WDDM) driver helps Windows communicate with the secondary display function of an AMD/ATI Radeon X1550 graphics adapter. It is useful when restoring an older PC, resolving a missing display-driver entry, or setting up an additional monitor on compatible hardware.

The “Secondary” label generally identifies an additional display function rather than a separate graphics card. Also, “64-bit” in the device name does not establish whether you need a 32-bit or 64-bit Windows driver—check your operating system’s architecture before choosing a package.

Key Features

• Display recognition: Helps Windows identify the adapter’s secondary display function instead of relying on a generic or unrecognized device entry.
• Resolution and color settings: Provides access to display modes supported by the graphics hardware, connected monitor, and compatible driver.
• Multiple-display configuration: Supports secondary-output setup when the card, connections, and driver package allow it.
• Windows graphics integration: A compatible WDDM driver enables communication with the Windows display subsystem; available acceleration and desktop effects depend on the operating system and hardware.

How to Install Radeon X1550 64-bit Secondary (Microsoft Corporation – WDDM) Driver

1. Check your system. Open Device Manager, locate the display adapter, and review its hardware IDs. Confirm your Windows version and whether the installation is 32-bit or 64-bit.
2. Verify compatibility. Before selecting a Radeon X1550 64-bit Secondary (Microsoft Corporation – WDDM) driver download for Windows, check the package’s supported systems. For Windows 10, 8.1, 7, Vista, or XP, compatibility must be verified individually. XP requires an XP-specific driver rather than WDDM, and Windows 10/11 support should not be assumed for this legacy adapter.
3. Choose a trusted package. Look for a free download through Windows Update or a verified manufacturer source. Select the latest version explicitly compatible with your hardware and OS—not simply the newest package available.
4. Install the driver. Create a restore point, then run the installer. For an extracted driver package, use Device Manager’s “Update driver” option and browse to the folder containing the compatible INF file.
5. Restart and test. Reboot the computer, check Device Manager for warnings, and confirm that resolution settings and any additional monitor work correctly.

Keep a working driver backed up before attempting an update. Legacy hardware may no longer receive new releases, so prioritize a stable, compatible driver over frequent changes, and roll back if an update causes display problems.