The NEC FireWarden OHCI Compliant IEEE 1394 Host Controller driver lets Windows communicate with the controller used to connect compatible FireWire devices. This Microsoft-provided driver supports the controller’s role in detecting attached hardware and managing data transfers, helping applications access equipment such as external drives and digital video cameras.

Key Features

• IEEE 1394 connectivity: Enables Windows to work with the host controller and communicate with compatible devices connected through its FireWire ports.
• OHCI interface support: Provides driver support for the controller’s Open Host Controller Interface, the standard used by compatible IEEE 1394 hardware.
• Windows hardware integration: Allows the controller to be recognized and managed through Device Manager, where you can check its status and troubleshoot driver issues.
• Support across Windows versions: Driver options cover Windows 10, 8.1, 7, Vista, and XP. Select the package intended for your specific Windows version and system architecture; a single package may not support every listed system.

How to Install

1. Confirm the controller and operating system. Open Device Manager and look under “IEEE 1394 Bus host controllers.” Verify that the entry matches the NEC FireWarden OHCI Compliant IEEE 1394 Host Controller. Check whether your Windows installation is 32-bit or 64-bit before choosing a download.

1. Choose a compatible driver package. Review the package’s supported operating systems and hardware details. If the controller appears as an unknown device, use its hardware IDs in Device Manager to help confirm compatibility rather than relying on the displayed name alone.

1. Download and prepare the files. Save the driver to a local folder and extract it if supplied as an archive. Close applications using connected FireWire equipment. Safely eject any attached storage before disconnecting it.

1. Install the driver. Run the included installer if one is provided. Otherwise, right-click the controller in Device Manager, select the driver update option, and browse to the extracted driver folder. Follow the prompts; wording varies between Windows versions.

1. Restart and check operation. Restart if prompted, then confirm that Device Manager reports no controller errors. Reconnect your FireWire device and test it in the appropriate application.

If Windows already has a working compatible driver, replacing it may not be necessary. Some connected FireWire devices also require their own software or drivers, separate from the host controller driver.

Common Issues and Fixes

• Install fails or shows Code 10/28: Remove old FireWire/1394 driver entries in Device Manager (enable Show hidden devices), then install the Windows inbox IEEE 1394 OHCI driver or the correct NEC package for your OS architecture. Reboot before retesting.
• Device not detected: Check BIOS/UEFI for a disabled IEEE 1394/F