Installation is a snap.
Just remove your hard drive and screw in the unit. Put the hard drive back where it use to be, hook up the power and you're away. The fan is a 12 volt unit and gets power off your computer power supply by a pass through power connector. I taped the temp probe to the top of the drive to see how effective the unit really is. It's quite obvious that putting the temp probe under the drive would result in lower readings because the fan would be blowing directly at the probe.