content: Purchased this adapter so I could load information on a new SATA drive before installing in the laptop.NO instructions come with the adapter, but use SEEMS very straight forward... plugs only go in one way.Literally, SMOKE came out of the drive when I plugged it in (and an awful smell of something burning). Either the adapter is defective or I should have only used one of the cables...no way to know, but I'm pretty certain that the brand-new drive was good. Had to get a NEW drive, as this one was damaged by using the adapter.Not blaming anyone, just WARNING anyone trying this product to get DOCUMENTATION before using it...NO useful information comes with the unit.Find out WHICH plug to use, where power goes (which pin, etc)...Haven't heard of this kind of problem from others reading reviews, but I'm certain I couldn't have been the only one.Good luck !