The Conexant Fusion 878a is a video-capture chipset used in various legacy TV tuner and capture cards. Its driver allows Windows to recognize the card’s capture hardware and makes supported functions available to compatible recording or viewing software. For Windows 11, 10, 8, or 7, check the download’s compatibility details carefully: support depends on the specific card, driver version, and system architecture.

Key Features

• Hardware recognition: Helps Windows identify the Conexant Fusion 878a capture hardware rather than leaving it listed as an unknown multimedia device.
• Video capture access: Enables compatible applications to receive video from inputs available on the card, such as composite or S-Video, where fitted.
• Card-specific functionality: Can provide access to tuner and capture controls when the driver matches the card’s hardware configuration. Features vary between manufacturers and models.
• Application integration: Supplies the driver interface needed by supported capture software. Recording tools and TV-viewing applications may need to be installed separately.

How to Install

1. Identify your capture card. Open Device Manager and locate the card, which may appear under “Sound, video and game controllers” or “Other devices.” Check its Properties > Details > Hardware Ids to help confirm the correct driver.
2. Check the operating system match. Verify whether you use Windows 11, 10, 8, or 7, and whether the installation is 32-bit or 64-bit. A driver for another Fusion 878a-based card or an older Windows release may not work with your setup.
3. Download and prepare the package. Choose a driver that explicitly supports your card and Windows version. Extract compressed files to a folder you can easily locate, and review any included installation instructions.
4. Install the driver. Run the supplied installer if available. Otherwise, right-click the device in Device Manager, select “Update driver,” choose “Browse my computer for drivers,” and point Windows to the extracted folder. Restart if requested.
5. Test the capture hardware. Confirm that Device Manager shows no warning icon, then select the card in a compatible capture application and test a connected video source.

Because this is legacy hardware, a compatible signed driver may not be available for newer Windows installations. If Windows rejects the package, verify compatibility rather than disabling driver-signature enforcement or forcing an unrelated driver.

Common Issues and Fixes

• Install fails on modern Windows: The Fusion 878a is a legacy video-capture chip, and its driver may be unsigned or 32-bit only. Try installing in compatibility mode for the intended Windows version, or use a signed driver build; on 64-bit Windows, disable driver signature enforcement only as a temporary install step.
• Device not detected: Reseat the PCI capture card and try another PCI slot. In Device Manager, look for an unknown “Multimedia Video Controller” or “Conexant 878A” device; install the chipset/PCI driver first, then the Fusion 878a capture driver.
• Version conflicts: Remove old Conexant 878A/TV-tuner drivers and bundled capture software before installing a new version. In Device Manager, uninstall the device and select “Delete driver software,” reboot, then install the matching Fusion 878a driver.