I’m using this card on a MacBook Pro (early 2008 version). I just upgraded to Mac OS X 10.6 (Snow Leopard) and found that my Lindy esata card no longer worked due to driver incompatibility so I needed to download the latest Mac OS X 10.6 beta driver version 1.1.11 from the following location: https://www.siliconimage.com/support/searchresults.aspx?pid=32&cat=3&os=3 and now it works again. Phew!
Mean people, mean people suck.