Ok, I'm glad I've asked.
I couldn't even find it in the user manual I downloaded.
And there are more sites with information that isn't correct.
It would be a shame to buy a microSD card and to find out it doesn't work
BTW: Is it better to but a microSD or microSDHC? And does it matter which brand/company?
I'm using Ubuntu.
I've been reading a lot on these forums, but the information can be quite overwhelming ..