Prior to Sierra and maybe even prior to El Capitan, I had to use Trim Enabler on my Crucial M4 SSD inside my 2012 MBP. I updated to Sierra recently and I went to download a new update to Trim Enabler and it says Trim is enabled but not through the Trim Enabler app. I check System Info and sure enough, Trim has been enabled on my M4. Did Apple enable Trim support? Have I been sleeping under a rock and it's been enabled for awhile now?