Micro SD term does not refer to a variant of the full-size secure digital (sd) memory card.
A Secure Digital (SD) card is a tiny flash memory card developed for high-capacity memory and different portable devices, such as car navigation systems, cellular phones, e-books, PDAs, smartphones, digital cameras, music players, digital video camcorders, and individual computers.
Hard drives are good for storing photos because they are cheap, they provide fast admission to data, and it's very easy to copy a whole hard drive to another hard drive especially if you have USB 3.0 or Thunderbolt associations
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