SD Cards
SD cards are based on the older MultiMediaCard (MMC) format, although SD cards have a number of differences:
- SD cards are asymmetrically shaped so that they cannot be inserted upside down, whereas an MMC card will go in most of the way but not make contact if inverted.
- Most SD cards are physically thicker than MMC cards. SD cards generally measure 32 mm × 24 mm × 2.1 mm, but can be as thin as 1.4 mm, just like MMC cards (see below).
- The contacts are recessed beneath the surface of the card (like Memory Stick cards), protecting the contacts from contact with the fingers
- Most offer a write-protect tab on the side. This is not a switch, and it is up to the device into which the card is plugged to sense the absence of the tab from the front of the notch and protect the card from writes.
- SD cards typically have higher data transfer rates, but this is always changing, particularly in light of recent improvements to the MMC standard.
- Digital rights management features or SD cards are available but are seldom used.
Adapters
Devices with SD card slots can use the thinner MMC cards, but the standard SD cards will not fit into the thinner MMC slots. SD cards can be used in CompactFlash or PC Card slots with adapters. mini SD cards and micro SD cards can be used directly in SD card slots with physical interface adapters. There are some SD cards with a USB connector for dual-purpose use, and there are card readers which allow SD cards to be accessed via many connectivity ports such as USB , FireWire , and the common parallel port. SD cards can also be accessed via a floppy disk drive with FlashPath adapters.
A recent development is SD cards with built-in USB plugs, to eliminate the need for an SD/USB adapter or SD card slot on a PC, though at higher initial cost. One design marketed by SanDisk features a folding flap to expose the plug. Although SanDisk was not the first to market USB enabled SD cards, the move did encourage other manufacturers to follow suit. You can find USB enabled SD Cards here.
SD Cards
SD cards are used as storage media in these devices:
- digital camera devices for storing pictures
- camcorders for storing still images and video clips
- PDAs for storing all kinds of data
- mobile phone devices for storing images, sound clips and other media files
- digital audio players
- DAB radios
- Nintendo 's Wii and DS for storing multimedia and game save files.
- GP2X GNU/Linux based portable games console.
- Global Positioning devices, for storing map and waypoint data, as well as digital photos and audio.
- PlayStation 3 for storing multimedia and game save files.
As of 2006 , SD cards have capacities ranging from 8, 16, 32, 64, 128, 256, and 512 MB , 1, 2, 4, 6, 8 GB (4-8GB: SDHC)
Please have a look at our range of SD Cards by clicking here
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Kingston's standard 2GB SD memory cards combine massive storage capacity, blazing data transfer rates in a sd card no bigger than a postage stamp. With an... |
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Elite Pro SD cards are built with the same quality features as standard SD cards, but deliver a faster data transfer rate for breakneck speed. Designed to... |
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Kingston's Ultimate SD memory cards deliver super-fast transfers of large images to meet the shooting needs of professional photographers. Kingston's SD... |
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SanDisk Standard SD cards give you plenty of room to capture and store all your photos, safely and securely. Built to last, you can count on SanDisk SD cards... |
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When speed really matters, serious photographers choose SanDisk Ultra II SD card. So fast, you'll never miss a shot. So rugged, environmental conditions are... |
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SanDisk Ultra II SD Plus card gives you the capability to connect your SD card directly into a USB port by transforming into a USB adapter, via our unique... |
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SanDisk Extreme III SD card, Built to work under the most challenging conditions, with SanDisk Extreme III SD card you'll get more speed, better performance,... |
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Sandisk SD card, x60 Speed - 9MB/sec Intended for demanding professional applications, the 60x SD card is suitable for all high end digital work. Backed up by... |
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FUJI 2GB SD Card 2GB Secure Digital Card Dimensions 24mm (W) x 32mm (L) x 2.1mm (H) Scroll down to see how many pictures this card will hold. Check... |
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TOSHIBA SD cards (Secure Digital Card) combine compact size of just 32 x 24 x 2.1 mm with a content protection feature (copyright protection, especially... |
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TRANSCEND SECURE DIGITAL (SD) Secure Digital Dimensions 24mm (W) x 32mm (L) x 2.1mm (H) Transcend Secure Digital Cards are suitable for use in a wide... |
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TRANSCEND SECURE DIGITAL (SD) Secure Digital Dimensions 24mm (W) x 32mm (L) x 2.1mm (H) Transcend's 150X SD Cards achieve outstanding data transfer... |
Kingston SD Cards
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Kingston's standard 2GB SD cards combine a massive storage capacity, blazing data transfer rates and ironclad security in a memory card no bigger than a postage stamp. With an excellent price-to-performance value, Kingston SD cards are an ideal expansion option for the smallest of devices including MP3 players, digital cameras, PDAs, smartphones and more.
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The Kingston 1GB SD Card is our most popular card with over 50 sold every day. Kingston is a popular and well known quality brand and yet it is sold at an unbelievable low price. OnlineMemory recommends Kingston SD Cards for use with MP3 players, digital cameras, PDAs, smartphones and more.
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Sandisk SD Cards
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The Sandisk 2Gb SD Card is the number 1 selling card in the UK. With SD Card capacities of up to 4GB, SanDisk Standard SD cards give you plenty of room to capture and store all your precious photos, safely and securely. These SD cards are Fast, and built to last, you can count on SanDisk Standard SD cards to be ready when you are, every day.
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