En FireWire -header er en type computerport, der giver mulighed for tilslutning af FireWire -enheder såsom eksterne harddiske, digitale kameraer og videokameraer. It is typically found on desktop computers and laptops, and is identified by its six-pin, trapezoidal shape.

FireWire headers are used to connect FireWire devices to the computer's motherboard. Once connected, these devices can be used to transfer data between the computer and the device. FireWire is capable of transferring data at very high speeds, making it ideal for tasks such as transferring large files or editing video.

FireWire headers are typically labeled with the letters "FW" or "FireWire," and may also be referred to as IEEE 1394 headers. They are usually located on the back of the computer, near the other I/O ports such as USB and Ethernet.

To use a FireWire header, you will need a FireWire cable. These cables are typically sold separately from FireWire devices and come in a variety of lengths. Once you have the cable, simply connect one end to the FireWire header on your computer and the other end to the FireWire port on your device.

Once the FireWire device is connected, it should be automatically detected by the computer. You may need to install drivers for the device if they are not already installed. Once the drivers are installed, you will be able to use the FireWire device with your computer.