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Retractable. Drives with this type of loading are equipped with a drawer, which is controlled by a built-in electric motor — for its extension or loading, just press a button. This is the standard boot mechanism for most internal drives used in PCs (see "Type").
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Retractable manual. In such drives, the button is used only to unlock the drawer — you have to pull it out and load it back manually. This loading mechanism is widely used in laptop drives (both internal and external), as it does not require power to load and unload the drive and saves battery life.
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slotted. In such drives, the disk is loaded through a special slot in the case: the disk is inserted there somewhere up to half, after which it is picked up by a special mechanism and placed inside the drive; extracted in the same way. It is used mainly in slim-variations of drives, both internal and external (see "Type").
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Manual. Drives with this loading have a disc compartment with a lid, similar to CD players. Opening the cover, inserting and removing the disc is done manually. Used in external drive models, can also be used in laptops. (see "Type").
