the card will be recognized by my MacPro (2.8GHz quad-core Intel Xeon with Mac OS X 10.8.2) and works without drivers. Contrary to orico pfu3-2p which is hardly to get, need the card current. is only an optical drive installed, you can use the plug (4-pin molex) for the optional second drive for the current branch. This requires a "power extension internal 4-pin male / female" with 100 cm! with 50 cm extension you have to dispense with the optical drive and even the relocation is very scarce. of the current extension I have the plug (male) pulled off and the wires connected to tesafilm. After removing the optical drive I have. through the hole behind the left, by the cable are out of the optical drive to the motherboard, a nylon wire is threaded, these things I previously been glued together with tesa cable fixed again with tesa After that I am drawn nylon wire and so the current extension of the "main room" of the computer to the connection cable for the SuperDrive threaded. that sounds safe all very complicated, but who has the same computer as I will know soon what I am talking. at the cable ends I have the previously removed plug remounted and this plugged into the current shunt of the optical drive. then reinstall optical drive, USB 3.0 card installed and connected to the power extension (females). finished. I have not run any benchmark tests, but only 10 GB of different movies from a 2.5-inch hard drive with USB 3.0 on a second 2.5-inch hard drive with USB 3.0 copies. the computer has given me min 2 as duration of the copy operation and longer it has never lasted. very quickly in my opinion! Which USB 3.0 Peripherals works and what does not, I can not test only a very limited extent, because I have only external (2.5 inch USB 3.0 500GB) hard drives.