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In keeping with its goals of robustness and low power use, the design of the laptop intentionally omits all motor-driven moving parts; it has no hard disk drive, optical (compact disc (CD) or Digital Versatile Disc DVD) media, floppy disk drive, or fan (the device is passively cooled). No Serial ATA interface is needed due to the lack of hard ...
Some early optical drives have dedicated buttons for CD playback controls on their front panel, allowing them to act as a standalone compact disc player. [47] External drives were popular in the beginning, because the drives often required complex electronics to institute, rivaling in complexity the Host computer system itself.
A Macintosh Quadra 660AV with a caddy-based CD drive. Caddies date at least to the Capacitance Electronic Disc, which used a caddy from 1981 to protect the grooves of the disc. [2] Some early CD-ROM drives used a mechanism where CDs had to be inserted into special cartridges, somewhat similar in appearance to a jewel case. Although the idea ...
The Dell Latitude D-series laptops support swapping out the optical drive with select modules available from Dell. Available were a CD-ROM, DVD-ROM/CD-RW and a DVD±RW optical disk drives, along with a 2nd hard drive, 2nd battery, floppy drive and Iomega Zip 250 drive. An external enclosure branded as the D/Bay was available, allowing users to ...
R2E CCMC Portal laptop. The portable microcomputer "Portal", of the French company R2E Micral CCMC, officially appeared in September 1980 at the Sicob show in Paris.The Portal was a portable microcomputer designed and marketed by the studies and developments department of the French firm R2E Micral in 1980 at the request of the company CCMC specializing in payroll and accounting.
A view of a CD-ROM drive's disassembled laser system The movement of the laser enables reading at any position of the CD. The laser system of a CD-ROM drive. 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 ...
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Drives 9.5 mm high became an unofficial standard for all except the largest-capacity laptop drives (usually having two platters inside); 12.5 mm-high drives, typically with three platters, are used for maximum capacity, but will not fit most laptop computers. Enterprise-class drives can have a height up to 15 mm. Seagate released a 7 mm drive ...