Dell Inspiron 15 3537 caddy dimension

[jasmin91]

i want to buy HDD Caddy but i dont know what dimension i saw there where 3 of them and seller ask me witch one i need 9 mm , 9,5 mm or 12,7 mm dimension of optic unit . so witch one do i need?

 

[jasmin91]

i want to put the lap top hdd in caddy and in his place to put a sata 3