It says 3.5" sata hdd on the box. I have been in touch with hitachi and they say that it does not need to be set to master or slave (these new hdd do not need it). They suggest that i install it through bios. Now how the hell does that work? I am not very technical when it comes to the workings of a computer, I just know how to use the programmes. Any help (and diagrams) would be very much appreciated.