310 Read the text about USB flash drives and fill in the gaps with the words in the box. Then listen and check.

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A USB flash drive is a flash memory data storage device integrated with a USB (Universal Serial Bus) interface. USB flash drives are removable and rewritable, and they're small enough to be carried in a (1) pocket. These portable drives are faster. have thousands of times more capacity. and are more durable and reliable than CD-ROMs because of their lack of (2) moving parts.

Unlike most removable drives, a USB drive does not require rebooting after it's attached, they are very robust and use very little power. They just need to be (3) plugged into a USB port to work and they're compatible with any modern (4) operating system, such as Linux, Mac OS X and Windows.

A flash drive consists of a small printed circuit (5) carrying the circuit elements and a USB connector, insulated electrically and protected inside a plastic (6) case.

The drive is often used as a (7) medium to save data, because it is very user-friendly and it can be carried (8) off-site for safety despite being large enough for several backups. Moreover, flash drives are cheaper and less fragile than many other backup systems. Its only (9) disadvantage is that it can be easily lost because of its size and it's easy for people without a right to data to take illicit backups. Some specially manufactured flash drives are provided with a metal or rubber case designed to be waterproof and almost unbreakable. It's been tested that these flash drives can retain their memory even after being submerged in (10) water, put in a washing machine and run over with a car.

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