The VIA OHCI-Compliant 1394 Host Controller (Controladora de host VIA compatible con OHCI 1394) connects Windows to compatible IEEE 1394, or FireWire, hardware. Its Microsoft driver enables the operating system to manage the controller and communicate with attached devices, such as older digital camcorders, external drives, and audio interfaces.

Key Features

• FireWire controller support: Provides the Windows driver interface for VIA-based host controllers that follow the Open Host Controller Interface (OHCI) specification for IEEE 1394.
• Connected-device communication: Supports data transfer between the computer and compatible FireWire peripherals. Some peripherals may also require their own drivers or software.
• Windows integration: Allows Windows to detect and manage the controller through Device Manager, helping you check its operating status and troubleshoot connection issues.
• Version-specific compatibility: Driver support covers Windows 10, 8.1, 7, Vista, and XP. Select a package appropriate for your Windows version and system architecture; a single package may not support every listed system.

How to Install

1. Identify your system and controller. Check your Windows version and whether it is 32-bit or 64-bit. Open Device Manager and locate the controller under “IEEE 1394 Bus host controllers.” If it appears as an unknown device, check its hardware IDs before choosing a driver.

1. Download the matching driver. Choose the Microsoft driver package intended for your VIA OHCI-compatible controller and operating system. Extract the files if the download is supplied as an archive.

1. Start the driver update. Right-click the controller in Device Manager and select “Update driver” or “Update Driver Software,” depending on your Windows version.

1. Choose the downloaded files. Select the option to browse your computer for driver software, point Windows to the extracted folder, and follow the prompts. If Windows reports that the package is incompatible, stop and verify the selection rather than forcing installation.

1. Restart and test. Restart if prompted, then check that Device Manager shows the controller without a warning icon. Connect a known-working FireWire device and confirm that the appropriate application recognizes it.

If a peripheral remains unavailable, check its power supply, cable, and any device-specific software requirements. Updating the host controller driver alone does not resolve every FireWire connection problem.

Common Issues and Fixes

• Install fails (Code 10/28/52): Confirm the hardware ID matches the VIA OHCI 1394 controller, then use the Microsoft 1394 OHCI driver included with Windows. Remove third-party 1394 packages first; avoid forcing a non-OHCI driver.
• Device not detected: Reseat the card, try another PCI/PCIe slot, enable IEEE 1394 in BIOS if available, and test with a known-good FireWire cable and powered device.
• Version conflicts: In Device Manager, uninstall old VIA/1394 entries and unknown devices, then scan for hardware changes. If available, roll back the driver; otherwise let Windows reinstall the inbox OHCI driver.