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One of the hottest innovations of the past few years in the USB flash drive, also known as a jump drive or a thumb drive (because most of the flash drives are about the size of your thumb). Flash drives are USB-enabled portable storage drives, which can be used to easily transfer information between computers. Flash drives have proven particularly useful for students, people who share computers, and those who bring work home to complete on their personal computers. But jump drives are also useful for traveling MP3 storage, photo albums and more. Flash drives comes in configurations from 64MB to 2GB and cost from about $15 to over $100 for high-storage options.
Bottom line: A USB flash drive isn't going to be your permanent solution for expanding data storage, but it can be very convenient.