Which FireWire standard uses a 9-pin connector?

The FireWire standard that uses a 9-pin connector is FireWire 800. This standard introduced higher data transfer rates compared to its predecessors, enabling speeds of up to 800 Mbps, which is double that of FireWire 400. The 9-pin connector allows for the support of both data and power connections, making it versatile for various devices. FireWire 800 connectors are often identified by their distinct shape, which is typically wider than the previous 6-pin or 4-pin connectors used in the FireWire 400 standard.

In contrast, FireWire 200, FireWire 400, and FireWire 1000 utilize different connector types and configurations. FireWire 200 (commonly known as FireWire 400) typically uses a 6-pin or 4-pin connector, reflecting its lower data transfer capabilities compared to FireWire 800. FireWire 1000 is not a widely recognized standard in this series; the widely known standards primarily include FireWire 400 and FireWire 800. Thus, while all these options are part of the FireWire family, only FireWire 800 utilizes the specific 9-pin connector.