There are currently two companies offering USB 3.0 interfaces for Apple computers: LaCie and CalDigit. This makes it a veritable Swiss Army knife of storage connectivity, but only if you own a Mac Pro desktop! A Tale of Two USB 3.0 Cards
The CalDigit FASTA-6GU3 combines two eSATA ports and two USB 3.0 ports on a single PCI Express card.
Mac storage specialist, CalDigit, recently introduced a new combination storage card for Mac Pro users. CalDigit offers an excellent range of USB 3.0 and eSATA expansion cards for the few Macs with compatible expansion slots