Hi, Please help? let me start with - disk is fine, I used it before as a main drive (in hdd slot), with different osx system and it had 200-350mb/s write and read. After year of laying I decided to fix my setup. Bought optibay (tray for hdd/ssd in superdrive place) where I installed this ssd (samsung pro 840), and in my hdd slot I have some 1TB 5400 speed hdd. installed el capitan on ssd (both drives encrypted) and right after that installed & opened blackmagic disk speed test. Results are: 1. hdd write 84mb/s, read 105mb/s 2. ssd: write was about 30mb/s, once even started from 80mb/s, but average is ~22mb/s, sometimes it gets even as low as 12mb/s. read - 180mb/s about this mac->more information->sata section shows that hdd controller has Link speed 6 Gigabit, while ssd controller has 3 Gigabit. What can I do here? Trim enabler on El Capitan is still way to go, or is it obsolete since OSX Lion? Maybe my optical bay is broken somehow? I hope I can expect and get my ssd in superdrive tray to at least 200mb/s?