USB 3 to Firewire 800 adapter?

[skadd]

Does that exist?
I want to buy a 4TB external drive that only has USB 3, problem is that I only have Firewire 800 and USB 2.

 

[Intell]

Yet don't exist. There is no USB/FireWire adapter.

 

[skadd]

That's too bad :/
What to do..

 

[mfram]

The USB 3 drive should work on a USB 2 port. It just won't go as fast as USB 3. I've used my Seagate GoFlex USB 3 on a USB 2 port for a while.