Interfaces
To communicate its codes to your computer, any pointing device needs to be connected in some way. Notebook computers have it easy—signals can take the direct route because they are built in. Desktop systems require some kind of port to which you can connect your mouse or other pointing device. Most systems today have a dedicated mouse port. But the industry-wide push to eliminate legacy ports of any kind, as well as the need for alternative pointing devices, are making the USB interface popular (at least among computer-makers). A few mice using the legacy RS-232C serial port are also available.
Mouse Port
The most popular way to connect a mouse to a desktop computer is via the mouse port. Physically the mouse port resembles a keyboard ...
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