Caddy (hardware) - Examples

Examples

Caddies date at least to the Capacitance Electronic Disc, which used a caddy from 1976 to protect the grooves of the disc.

Some early CD-ROM drives used a mechanism where CDs had to be inserted into special cartridges or caddies, somewhat similar in appearance to a jewel case. Although the idea behind this—a tougher plastic shell to protect the disc from damage—was sound, it did not gain wide acceptance among disc manufacturers. Drives that used the caddy format required "bare" discs to be placed into a caddy before use, making them less convenient to use. Drives that worked this way were referred to as caddy drives or caddy load(ing), but from about 1994 most computer manufacturers moved to tray-loading, or slot-loading drives.

The same system is still available for more recent formats such as DVD-RAMs but is not common.

The PlayStation Portable, UMD disc is a similar concept, using a small proprietary DVD-type disc, in a fixed unopenable caddy as both a copy protection and damage prevention measure.

The MiniDisc is a similar concept again, using a small proprietary Magneto-optical type disc instead, also in a fixed unopenable caddy.

While caddies have become obsolete, some websites still sell them, although they have become quite expensive.

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