The OHCI-konformer NEC 1394-Hostcontroller driver allows Windows to communicate with an NEC-based IEEE 1394 controller, commonly known as a FireWire controller. Provided by Microsoft, this driver supports the connection between the controller and compatible devices such as digital camcorders, external storage drives, and audio equipment.

Key Features

• IEEE 1394 connectivity: Enables Windows to recognize the host controller and communicate with supported FireWire peripherals.
• OHCI-standard support: Provides the operating system interface for an Open Host Controller Interface–compliant NEC 1394 controller.
• Windows device management: Integrates the controller with Device Manager so you can check its status, review driver details, and troubleshoot connection issues.
• Support across Windows versions: Driver options cover Windows 10, 8.1, 7, Vista, and XP. Choose a package that explicitly supports your Windows version and system architecture; a single package may not work across all listed systems.

How to Install

1. Confirm your controller and Windows version. Open Device Manager and expand “IEEE 1394 Bus host controllers,” or check “Other devices” if the controller is not recognized. Verify that the hardware matches the OHCI-konformer NEC 1394-Hostcontroller, then confirm whether your Windows installation is 32-bit or 64-bit.

1. Select the matching driver. Download a Microsoft driver package listed as compatible with your controller and operating system. Windows may already include a suitable driver, so check the installed driver status before making changes.

1. Extract the files if necessary. If the download is an archive, extract it to an accessible folder. Save your work and disconnect attached FireWire peripherals before updating the controller driver.

1. Install through Device Manager. Right-click the controller and choose “Update driver” or “Update Driver Software.” Select the option to browse your computer, point Windows to the extracted folder, and follow the prompts. Menu wording varies by Windows version.

1. Restart and test the connection. Restart if prompted, reconnect your FireWire device, and check that the controller appears without a warning symbol. Some peripherals also require their own drivers or software. If the update causes problems, use “Roll Back Driver” in the controller’s properties when available.

Common Issues and Fixes

• Install fails (Code 10/28): Remove any existing 1394 host controller in Device Manager, including hidden devices, reboot, then let Windows install the Microsoft 1394 OHCI Legacy driver. Run setup as administrator.
• Device not detected: Reseat the NEC 1394 PCI/PCIe card, check slot power, and use Device Manager > Scan for hardware changes. Install motherboard/chipset drivers first so the OHCI controller is not left as an unknown device.
• Version conflicts (Code 31/39): Uninstall third-party/OEM 1394 stacks and delete hidden 1394 devices, then reboot. Keep only Microsoft