I bought a IT-CEO 3.5" Sata external hard drive enclosure. It has its own power supply and USB 3.0. The HD is a Samsung HD103SJ, 1TB, 7200rpm. A new iMac and a 2013 MacBook Air won't recognise it at all. The hard drive was formatted in Windows and has an iTunes music library I want to transfer. The enclosure appears ok in a Linux computer. The hard drive works perfectly when plugged directly into the second slot inside the Linux computer. I can get Western Digital external drives formatted in Windows to appear in the two Apple computers without any trouble but not this enclosure. Am I doing something wrong?