Hi have this problem with a Corsair Force LS 240 Gb SSD and a Macbook Pro 13” 2010 (Model identifier MacBookPro7,1) running El Capitan, when I connect the SSD via USB it boots perfectly, but when I replace the internal hard disk with the SSD, it just won’t boot. It reaches the part with the apple logo and the progress bar but after more than 8 hours it’s still there. I used Carbon Copy Cloner to clone the hard drive to the SSD. I’ve heard that this is because the SSD has a bandwidth of 3 Gb/s while the MacBook Pro motherboard has only a 1.5 Gb/s. It should be backwards compatible but for a weird reason Macs have a problem with this. The SSD has no pins for jumpers in order to bypass this (as other vendors have). Any idea if this is really the problem? if so, any idea on how to solve this? Thanks.