I had to transfer a large number of big files from my macbook to my 2012 mac mini. I did it through turning off wifi and connecting an ethernet cable to the mac mini and thunderbolt to lan adapter on the mac book. It went from 12hrs to 12minutes. But I was just wondering if I could have done the same thing if I had a 27" thunderbolt display and connected my macbook to the extra thunderbolt display on the back of the thunderbolt monitor. What if I connected a usb cable from the macbook to the usb on the display port? Looking for faster and easier ways to transfer file from the mac book to the mac mini. I could do it through ethernet, but that means having a spare ethernet cable from the router.