What Is a USB Flash Drive 4Gb?
A USB 4GB flash drive--a miniature storage device for computer files--stores four gigabytes of data. Highly compact, flash drives let users carry them easily in a pocket or on a key chain.
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Significance
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Small, extremely portable, external hard drives that can hold different types of computer files, flash drives plug directly into the USB port on any computer.
Capacity
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Flash drives range in size from as small as 256MB to as large as 256GB. While 4GB may seem small in comparison, this size can still hold hundreds of text files, music files and images at one time.
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History
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SuperMediaStore.com reports that manufacturers introduced flash drives to the commercial market in 2001, and have since steadily increased in compatibility, data-transfer speed and capacity. The first USB drive released by IBM had a capacity of 8MB.
Other Names
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Flash drives--also referred to as jump drives, key drives, thumb drives and memory sticks--all have the same function, but quality and size depend on the manufacturer.
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