Hi Daniel,

Thanks for your reply.
The firewire port is a TI FW400 port and Yes it does work with a PSU, I just don't want this to be a sign of future problems.

Both onboard and PCI/e

It is strange, I have been running a cheaper brand Firewire interface before getting the FF400 today, so yes that and some external hard drives seem to be able to receive power from the Firewire bus.

I don't mind using the PSU that came with the FF400 and as I said before it seems to work perfectly running bus powered off my MBP so I don't think it's a problem with the unit.
I thought it may have been a problem with Windows/PC and the FF's driver as it seemed to be a odd way of installing the drivers, thanks to Microsoft.

One thing that may be worth mentioning is that I had install the drivers before windows would recognise the FF, usually when plugging something new in it goes through a whole "new device discovered" which it didn't this time, is this normal?

Thanks so much for your help!! :-)

Oh I also tried using a different FW cable with no luck either.

Hey Timur,
I think you may be right, on a side note I have to say how pleased I am with the FF400 and how easy it is to use Totalmix, compared to the previous so called "good for it's price" interface I had this is a major step up not only in convertor quality but user experience and having a manual rather than a 2 page pamphlet is great as well, high quality FW cable, ADAT cable all in the box

Outstanding product, my first interface that isn't just hype!

Thank you RME!!