Most multi-format memory card readers can read the xD format,
but contact your reader's manufacturer to be certain.
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The xD card in your digital camera is a memory card. When you
take pictures with the camera, the images are stored on the xD card
so that you can access them later.
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Currently, the largest xD card available for purchase is a 32 GB
memory card. The cost of the 32 DB xD card is around $120.