What is the maximum data transfer rate of an IEEE 1394a device?

The maximum data transfer rate of an IEEE 1394a device, commonly known as FireWire, is 400 Mbps. This specification was significant for providing a high-speed, reliable method of connecting devices such as digital cameras, external hard drives, and other peripherals to a computer.

IEEE 1394a, which is the first version of the FireWire standard, is capable of transferring data at this rate, making it suitable for tasks that require the movement of large amounts of data quickly, such as video editing or high-resolution image processing.

In contrast, the other listed speeds reflect lower data transfer capabilities either of older standards or other types of connections, making 400 Mbps the highlight of the IEEE 1394a standard in this context.