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In computer hardware, a caddy is a container used to protect an optical media disc from damage when handling. Its functionality is similar to that of the 3.5" floppy disk 's jacket. Its use dates back to at least the Capacitance Electronic Disc in 1981, and they were also used in initial versions of the Blu-ray Disc . [ 1 ]
CD-ROM discs are read using CD-ROM drives. A CD-ROM drive may be connected to the computer via an IDE , SCSI, SATA, FireWire, or USB interface or a proprietary interface, such as the Panasonic CD interface, LMSI/Philips, Sony and Mitsumi standards. Virtually all modern CD-ROM drives can also play audio CDs (as well as Video CDs and other data ...
Optical drives for computers come in two main form factors: half-height (also known as desktop drive) and slim type (used in laptop computers and compact desktop computers). They exist as both internal and external variants. Half-height optical drives are around 4 centimetres tall, while slim type optical drives are around 1 cm tall.
Most desktop models of drives for optical 120-mm discs (DVD-ROM or CD-ROM drives, CD or DVD burners), are designed to be mounted into a so-called "5.25-inch slot", which obtained its nickname because this slot size was initially used by drives for 5.25-inch-diameter (133 mm) floppy disks in the IBM PC AT.
The AppleCD SC Plus was Apple Computer's second CD-ROM drive, a replacement for the AppleCD SC which was introduced in 1991. Identified as model number M3021, just like its predecessor, the AppleCD SC, it used a 1x Read Only Media CD-ROM drive. The Plus could read a CD with up to 750 MB of data over the 650 MB of the AppleCD SC.
Original CD-ROM drives could read data at about 150 kB/s, 1× constant angular velocity (CAV), [1] the same speed of compact disc players without buffering. As faster drives were released, the write speeds and read speeds for optical discs were multiplied by manufacturers, far exceeding the drive speeds originally released onto the market.
Today the term external storage most commonly applies to those storage devices external to a personal computer. [5] The terms refer to any storage external to the computer. Storage as distinct from memory in the early days of computing was always external to the computer as for example in the punched card devices and media. Today storage ...
Beginning in September 1986, Apple adopted a unified cross-platform product strategy essentially eliminating platform-specific peripherals where possible. The Apple 3.5 Drive (A9M0106) is an 800K external drive released in conjunction with the Apple IIGS computer and replaced the beige-colored Macintosh 800K External Drive. It works on both the ...
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