I read the other reviews and the words of caution on Delkin's own website. I had no problems. Once I downloaded and installed the drive, I imported photos directly from a flashcard to iphoto. I am operating a MacBook Pro with OS 10.6.2.I've experienced regular problems since writing my original review.The device chokes my computer while transferring even 10 to 20 RAW files. The files will transfer, but once I start opening and working with them, Photoshop Bridge/CS4 will stop responding and a moment later a curtain descends dimming the screen. A popup in six languages appears telling me to shut down the machine.I retuned to Delkin's website and to get and re-install the drives and any updates. The problem was not fixed.I'd hold off buying until the bugs are worked out.