Check your need, because this adapter may be a little short ... if you see the side of your disk 3 1/2 inches, you'll notice three screw holes, this adapter has only two holes (those remote 6cm) . If like me you want to use this media to install an SSD instead of 3 "1/2 of an iMac, you'll need a little tinkering the specific binding system iMac (drilling) and get away with 3 points fixation instead of 4. The positive point is the position of the disc 2 "1/2 inside of the support, it allows the connector is the same location as the drive connector 3" 1/2, that is which led to my choice as the iMac, sata cable length leaves no freedom of positioning.
