The only way it mounts is from the computer being totally off and booting up or if the computer is on, powering the unit on with the thunderbolt cable out and then plugging the cable in after the drives spin up. I can’t mount it with the thunderbolt cable in and pushing the power on like any other drive. Yes it works but it’s annoying and over time the thunderbolt plug will fail or the port will fail from over use. Running on an iMac 15,1 on OS X 10.11.6
Anyone else have this?