The hard drive is installed by sliding out a tray from the rear of the enclosure and installing the drive on the tray. The included mounting screws supplied include four screws to mount the hard drive via the standard mounting holes and two longer screws to secure the slide tray inside the enclosure. Before securing the enclosure, be sure to hook up the small wire header that provides power and data to the front LCD display of the unit. This step is easy as you cannot plug the header in wrong to the controller board, but the wire may be a bit tight as you slide the tray back in.
One other thing worth mentioning; the screws to mount the hard drive to the tray are not standard ATX screws and appear to be low profile screws to allow the tray to slide back into the enclosure. So for those of you that have the tendency to drop small screws into that black hole otherwise known as the floor, be extra careful. This enclosure is obviously not designed to easily swap between various hard disk drives, but it could be done in short time with just a screw driver.
Once all was installed, it was just a matter of hooking up the power and USB cabled to the computer. This drive does come with one of the annoying power adapters that takes up two spots on a power strip. The supplied USB cable is also a bit short at around 4' long, but that's not a big deal. Once plugged into a USB port the drive was immediately recognized on a Windows 7 system.