It opens CD or DVD drive doors. It can be used with [CTRL+ALT+[Drive Letter]] or if you have your mouce pointer near the System Tray you can just right click on the icon an choose the drive that you want to open.
NOTE: If you have a disc inside the unit and the unit will not load it, just close “CyE CD/DVD Door Opener” go to your disc and you will see it, after that you can reopen the program.