- 12 + 5 + ( - 6 ) + 11 =

Read the text again and decide if the following statements are true (T) or false (F), then correct the false ones.

1 Flash drives are provided with a very limited storage capacity.

2 They are lighter that other removable drives.

3 They need an external power supply to work .

4 USB flash drives are compatible with few operating systems .

5 A plastic case prevents the printed circuit board from being damaged.

6 USB drives are convenient for transferring data between computers or for personal backups.

7 They are more expensive than other backup systems.

8 Some models continue to work even after being accidentally dropped into water.