Hi all ,I bought a 500 gb samsung 850 evo Sata 3 for my Inspiron 7559 laptop.The main drive( where windows is installed}  is  an M2 ssd. I should have opened up the laptop and checked first..I fear I may have messed up and will have controller issues if I clone the M2 to the 850 evo sata 3. and remove the M2 and place the Evo sata 3 in the empty sata slot. I fear I  I wont be able to boot the machine since it will be in slot one instead of slot 0.Am I correct and will need to send the evo 850 sata back and buy an M2 850 evo instead?Hope I have been cler with my explanation.Thanks for any help.