Installing a hard drive is quite easy. Open the case, and remove the old drive by removing the screws holding it in place. Make sure the pins on the hard drive are set to master unless, you are installing two hard drive, in that case should be set to slave. Slide the drive into the drive bay and anchor with screws. Attach the flat ribbon cable (IDE) or the orange vinyl cable (SATA) to the drive, connect the white power cable. That’s it.