Which of the following is both an input and an output device?

Which of the following is both an input and an output device?

• Printer
• Mouse
• USB thumb drive
• Keyboard 

EXPLANATION

a flash drive is an output device.

A flash drive can fit into either category(input, output or storage). It simply depends on how it is used. 

A USB Flash drive is considered a storage medium. Data can be both read, stored, and sent to / from a USB Flash drive, but it does not in itself input or output any data.