Storage Space

• USB drives can have enormous storage space. While some flash drives are as low as 1 GB, flashdrives can get as large as 256 GB, giving you enough storage for just about anything.
  
  

Portability

• Flash drives allow you to move large amounts of data very easily. External USB drives are so small that several could fit inside one pocket.
  
  

RAM Boost

• External USB drives can be used to give your computer a boost. Many computers and laptops have features that allow some of the space on an external USB drive to function as more RAM space.
  
  

Booting

• USB drives allow you to cleanly boot DOS for troubleshooting and BIOS update purposes.
  
  

Affordability

• As of 2009, 1 GB USB flash drives can be as low as $10 a piece. Of course, larger flash drives can be more expensive, with the largest being $900.
  
  

Travel

• External USB drives allow you to move your favorite web browser, media player, word processor or other software program with you and run that program directly from your USB drive on other computers.