USB 3 Hub possible not to support OS X?

Hi,

I'm looking for a cheap USB 3 hub. I found one but it says that on Mac OS X it's limited to USB 2.0.
Why is a Mac compatible USB 3 hub needed? Or is it some kind of mistake perhaps?

http://www.ebay.com.au/itm/mbeat-7-...367795?hash=item2a320d6fb3:g:IRwAAMXQt5ZRX7Aq

Appreciate any input!