I was recently discussing a 4 bay enclosure and using it with my 2011 mac mini via thunderbolt and a lacie esata thunderbolt hub. I bough this; http://www.amazon.com/Bay-3-5-Sata-Esata-usb/dp/B003CNQPGU and have connected it via esata to my mac mini through this; http://www.amazon.com/LaCie-eSATA-Hub-controller-eSATA-300/dp/B007SYXER2/ref=sr_1_1?s=electronics&ie=UTF8&qid=1360661172&sr=1-1&keywords=la+cie+esata+hub the hub connects to my mac mini via thunderbolt, & the icy dock is connected to the hub via an esata cable. ( I did notice that the esata cable that came with the icy dock had a very sloppy fit when plugged into the lacie hub's esata port, it kept falling out with any bit of movement, & the way it is flat makes it hard to plug in as well.) I installed a hard drive into one of the trays to see how it works. I then powered up the icy dock with 1 hard drive installed, & nothing, the icy dock powers up, the hard drive powers up, & the little light shows up showing hard drive access, I can hear the hard drive spinning & running. but nothing, the hard drive does not mount in mac os. I went into system profiler, & under thunderbolt, the la cie estata shows up, but then it shows no device connected to it. what is wrong with the estata? why is it not working?