Many portable devices use Secure Digital (SD) cards. These cards are designed to be convenient for storing data and transferring it from one device to the next. Not all devices use the same size SD card, however, so an SD card adapter may be needed to overcome this problem. In most cases, the SD card slides into or is placed into an adapter that matches the electrical connections for the destination computer. This allows the use of the card inside a device designed for the different sized memory card.

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SD Card Adapter is a device.