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Home » Flash Memory » SD Card
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Secure Digital (SD) Card
A Secure Digital (SD) card is a tiny memory card used to make storage portable among various devices, such as car navigation systems, cellular phones, eBooks, PDAs, smartphones, digital cameras, music players, camcorders, and personal computers. An SD card features a high data transfer rate and low battery consumption, both primary considerations for portable devices. It uses flash memory to provide nonvolatile storage, which means that a power source is not required to retain stored data.
An SD card is about the size of a postage stamp and weighs approximately two grams. It is similar in size to a MultiMediaCard, but smaller than older memory card types such as the SmartMedia card and the CompactFlash card. Both MMC and SD cards provide encryption capabilities for protected content to ensure secure distribution of copyrighted material, such as digital music, video, and eBooks. SD cards are available with storage capacities of 1GB, 2GB, 4GB, 6GB, and 8GB.
SD cards are more rugged than traditional storage media. They have an operating shock rating (basically, the height you can drop them from and still have them work) of 2,000 Gs, compared to a 100-200 G rating for the mechanical drive of the typical portable computing device. This translates to a drop to the floor from 10 feet, as compared to a single foot for the mechanical disk drive. Both MMC and SD cards use metal connector contacts, instead of the traditional pins-and-plugs,so they aren't as prone to damage during handling.
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| SanDisk 2GB Secure Digital SD Card - SDSDB-2048-A11
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Brand: SanDisk
Storage: 2GB
Part No. SDSDB-2048-A11
Price - $31.25 each. |
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| SanDisk 4GB Secure Digital SD Card - SDSDB-4096-A11
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Brand: SanDisk
Storage: 4GB
Part No. SDSDB-4096-A11
Price - $54.69 each. |
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| SanDisk 8GB Secure Digital SD Card - SDSDB-8192-A11
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Brand: SanDisk
Storage: 8GB
Type: SDHC Card
Part No. SDSDB-8192-A11
Price - $101.56 each.
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| SanDisk 4GB Secure Digital SD Plus Ultra II - SDSDPH-4096-A11
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SanDisk's 4GB Ultra II SD Card is the high-performance digital memory solution for the serious photographers. This flash card provides the durability and high-speed quality needed for advanced amateur photographers and photo enthusiasts. SanDisk's newest addition is the innovative Ultra II SD Plus USB, which combines USB and SD functionality in a single card. The ubiquity of this new format eliminates the need for a reader or PC card adapter, as it transforms from an SD card to a USB adapter with our unique hinged cover.
Brand: SanDisk
Storage: 4GB
Type: Ultra II SD Plus USB
Part No. SDSDPH-4096-A11
Price - $62.49 each. |
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| SanDisk 4GB Secure Digital SD Extreme III with Reader - SDSDRX3-4096-A21
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Brand: SanDisk
Storage: 4GB
Type: Extreme III SD With Reader
Part No. SDSDRX3-4096-A21
Price - $78.99 each. |
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| Verbatim 2GB Secure Digital SD Card Premium - 95496
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Brand: Verbatim
Storage: 2GB
Type Premium
Read Speed: 66x
Write Speed: 60x
Part No. 95496
Price - $22.44 each. |
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