The complication that arises from trying to connect to Firewire devices is because Firewire sends a constant stream of data, while USB sends data in packets so the two were incompatible. At least this was the case until USB 3.0/3.1 came along which is more than just faster than USB 2.0, it's a different protocol: it is asynchronous, meaning it can send and receive data at the same time (full duplex), along with charging other devices. This is in contrast to USB 2.0 which is half duplex, meaning it can only send or receive data, not both at the same time. But in any case the data is still sent in packets, so it is more complicated than just changing plugs with an adapter.
I don't know what distinguishes Thunderbolt from USB 3.0, but it seems to be able to accommodated the Firewire data stream, and both Apple and OWC sell adapters to connect it with Firewire devices, which will be the way I will go when I upgrade my 2010 MacPro next year. Ken Bennett's mac computer (above) has USB-C ports which work for both USB 3.1 and Thunderbolt.
However, none of this this is particularly useful to the OP who is using a Windows computer. So good luck
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