USB flash drives are used to store, back up and transfer computer files. They're very popular due to their small size, fast transfer rates and portability. When choosing a USB flash drive, the most important factors to consider are storage capacity and transfer rate.
The most common USB flash drive storage capacities are 8GB, 16GB and 32GB. An 8GB flash drive is a good choice for storing Word documents and music files, while a 32GB flash drive is ideal for movies. Of course, the number of files you need store will also affect the amount of storage capacity that you need.
USB 2.0 flash drives have a transfer rate of up to 480Mbps, while USB 3.0 flash drives allow for transfer rates 10 times faster — up to 4.8Gbps. However, you can only take advantage of this higher speed if your device has a USB 3.0 port. Although USB 3.0 flash drives and other devices are backwards compatible with USB 2.0 ports, they will only operate at a USB 2.0 rate.
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