A(n) is a hardware device that plugs into one of the ports of a computer.

There are many answers to this question: 

There are 11 ports in a typical computer:

1) PS/2 port (keyboard)
2)PS/2 port (mouse)
3)USB ports 
4)Ethernet Port (network)
5)Serial Port (dial-up modern)
6)LPT1 Printer Port (printer)
7)VGA Port (monitor)
8)Game Port (joystick)
9)Speakers 
10)Line In 
11)Microphone 

Hope this helps,

kwrob :)

Nourth and south korea

Why can you not find anything better to do i mean i guess talking to strangers is pretty entertaining