The AGERE OHCI Compliant IEEE 1394 Host Controller driver allows Windows to communicate with the computer’s FireWire controller and recognize compatible devices connected to it. This Microsoft driver supports the controller’s basic operation, helping applications access equipment such as FireWire storage drives, audio interfaces, and digital video camcorders.

Key Features

• IEEE 1394 connectivity: Provides Windows support for the AGERE FireWire host controller, enabling communication with compatible external hardware.
• OHCI-compliant operation: Uses the Open Host Controller Interface standard to manage the controller through the Windows driver framework.
• Device detection and data transfer: Helps Windows detect attached FireWire devices and handle transfers through the controller. Some peripherals also require their own drivers or software.
• Support across Windows versions: Driver options cover Windows 10, 8.1, 7, Vista, and XP. Choose a package intended for your specific Windows release and system architecture; one package may not support every version.

How to Install

1. Check your Windows version and hardware. Confirm whether your system uses a 32-bit or 64-bit edition of Windows. Open Device Manager and look under “IEEE 1394 Bus host controllers” for the AGERE OHCI Compliant IEEE 1394 Host Controller. If it appears as an unknown device, check its hardware IDs before selecting a driver.

1. Select a compatible driver. Choose the Microsoft driver package that matches your controller, Windows version, and architecture. Windows may already include a suitable driver, so check the existing installation or Windows Update before replacing it.

1. Prepare the downloaded files. Extract the package if it is compressed. Save any open work and disconnect FireWire peripherals before updating the controller driver.

1. Install or update the driver. If the package includes an installer, follow its instructions. Otherwise, right-click the controller in Device Manager, select the driver update option, and browse to the extracted folder. Follow the prompts, and do not force installation if Windows reports that the driver is incompatible.

1. Restart and verify operation. Restart the computer if prompted, then check Device Manager for warning icons. Reconnect a compatible FireWire device and test it with the appropriate application.

If the controller is recognized but a connected device still does not work, check the cable, peripheral power supply, and any device-specific software requirements before changing the host controller driver again.

Common Issues and Fixes

• Install fails or driver is rejected: Older Agere IEEE 1394 packages may be unsigned or incompatible with current Windows. Use Device Manager > Update driver > Browse > Let me pick, then select the Microsoft “1394 OHCI Compliant Host Controller” or “Legacy” driver instead of forcing the Agere package.
• Device not detected: Confirm the IEEE 1394 controller is enabled in BIOS/UEFI, then check Device Manager for unknown devices. Reseat the FireWire cable, try another port, and run “Scan for hardware changes.”
• Version conflicts: Remove any existing Agere/VIA/SiS 1394 driver before installing another. If the device stops working after an update, use Roll Back Driver or uninstall the device and restart so Windows reloads the Microsoft OHCI driver.