I have an older Samsung SSD drive, so I purchased this StarTech USB/SATA adapter cable so I could use the drive externally on my late 2013 iMac. I then enabled TRIM using the terminal: Code: sudo trimforce enable This worked, and the drive works well. But as a side effect, it has caused itself, as well as my Seagate Backup Plus Desktop Drive (4TB) to spontaneously eject whenever the computer sleeps. I then get the warnings in notification center that the drives have not been ejected properly. I turned off TRIM using the terminal: Code: sudo trimforce disable And just as I thought, I no longer have problems with drive ejection during sleep. Anyone else seeing this? Any workaround?