The Shuttle Accessory MY01 is a permanent cover for the upper storage bay on certain Shuttle's 3-litre PCs. This self-adhesive mylar (robust foil) is intended to protect the empty optical drive bay, in case no optical drive is installed which usually protects the drive bay by itself. The MY01 now offers an addional protection so that no harmful objects can get in. This is especially useful in office or educational environments.