I've used a Dynex DX-HD302513 USB 3.0 2.5\ SATA Hard Drive Enclosure Kit with an old Windows HD as an external/backup HD for a few years. This has always worked fine with our old 2009 iMac, but it will not connect to my new MacBook air - you can hear it constantly restarting/reconnecting (but not clicking), but it never shows up on the MacBook. Does anyone know what would cause this or how to fix it?