Did you know that you can use Focusrite’s Saffire Firewire interfaces with the Thunderbolt ports on your Mac? It’s true! All that’s required is a Firewire 400 to Firewire 800 cable and a Firewire 800 to Thunderbolt adapter. That’s it — just plug in the interface, and you’re good to go. The adapter supplies 7 watts of bus power, so some of the Saffires will even run without their power supply (though this is not recommended).
The following Saffire interfaces support Thunderbolt via the Firewire 800 to Thunderbolt adapter: