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Removable Storage Devices
Removable storage devices that you can remove from your computer without turning the computer off are called removable storage devices. Commonly used
removal storage devices include:
Optical discs
Memory cards
Floppy disks/Zip disks
Magnetic tapes
Optical Discs
Some examples of optical discs are:
Blu-ray Disc — Blu-ray Disc (BD) was designed to supersede the DVD format. The standard physical medium is a 12 cm plastic optical disc, the same
size as DVDs and CDs. A Blu-ray Discs stores 25 GB (single layer) or 50 GB (dual layer).
DVD — A Digital Versatile Disc (DVD) stores data up to 4.7 GB (single layer) or 8.5 GB (dual layer).
CD — A Compact Disc (CD) stores data up to 800 MB.
Memory Cards
Memory cards, also referred to as flash cards, use flash memory to store digital information. They are re-writeable, fast, and retain data even when power
supply is cut off. Memory cards are commonly used in devices such as digital cameras, mobile phones, media players, gaming consoles, and so on.
Some common types of memory cards are:
Secure Digital (SD)/Secure Digital High Capacity (SDHC)
Memory Stick (MS)/Memory Stick Pro (MS Pro)
Extreme Digital (xD)
Multimedia Card (MMC)
Related Information
Internal Storage
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