Hey guys, I'm just about to receive 2x Samsung 850 Pro 512gb SSD's for my Late 2011 MacBook Pro .. This will be my first time installing to a laptop, but not my first experience under the hood of a computer.. I don't really know anything about "TRIM" or "TRIM Support", and this is my first SSD that I'll be owning.. I have been reading that it is beneficial to have/use/download something called "TRIM" or "TRIM Support" when installing 3rd party SSD's because they run cooler/more efficient or something? I've attached the spec. sheet from the Samsung 850 Pro I'll be receiving in a few hours, which says: Trim Support: Yes (Requires OS Support) I really have no idea what TRIM is or if/how/when/where/why I should use it.. Basically, I'm going to be replacing the main, internal MacBook Pro HD, as well as using the OWC Data Doubler to be able to use a 2nd SSD in my SuperDrive/optical bay.. I plan on doing a complete/fresh install once I put in these 2 new drives, along with upgrading the RAM to 16gb (2x8gb ddr3 1333hz).. Can somebody please give me some direction on this subject? My main questions are: 1. What is "TRIM" Support? 2. Is it necessary to use on Late 2011 MacBook Pro OSX 10.9.5? 3. Where do I download "TRIM"? 4. How do I install "TRIM"? 5. What benefits/disadvantages would I have in using "TRIM"? 6. Do I need to install anything if my Samsung 850 Pro 512gb has TRIM support (but requires OS support)? Could really use some help on this matter! Thanks everyone!