Input & Output devices

What type of device is this?

• Output
• Input

• input
• output

• input
• output

• input
• output

• input
• output

• input
• output

• input
• output

• input
• output

What kind of devices is this ?

• input

• output

Is it an input or output device?

• Input

• Output

• Input and output

• I don't know