Firewire to USB for Keyboard and Mouse

I have a Mac mini with fried USB ports as indicated at:

How to DIY-repair fried USB ports on Mac mini?

https://discussions.apple.com/thread/5066111

and the Bluetooth does not work either.

Therefore, I cannot use such Mac, since the Appple USB keyboard/mouse and Apple Bluetooth keyboard/mouse are not functional with such a Mac.

Questions:

1. Are there Firewire to USB adaptors to connect the Apple USB keyboard to the Mac?

2. Are there Firewire to USB hubs to connect the Apple USB keyboard to the Mac?

3. Are there Firewire keyboards?

Thanks.