You can not mount this in every 5.25 "bay I have 2 bays in Which It Can not Be Mounted:. One does not have the hole in the right place, in the other I can not mount 2 2.5" drives without damaging The Drive connectors When connecting the cables (or I would have to buy a very flat connector That is not protrubing from the HD height). So I'm not satisfied with this item. I kept it in my 3rd Because it fits Bay Which does have the holes and has some added space underneath for the connectors.