and how do I do it ? So I have a 2012 MBP 13" and I installed a Samsung EVO 850 1TB SSD. I used Carbon Copy Cloner to do it. I cloned the drive on my iMac that has El Capitan. Was pretty easy but now I'm reading about TRIM and I'm a bit confused. I know its about garbage collection kinda sorta but is it gonna speed up my MBP and what else will it do ? FWIW, the 2012 MBP works fine but my late 2104 iMac seems much faster. Thanks in advance.