PS/2 mouse port, also referred to as the mouse port, was developed by IBM and is used to connect a computer mouse to an IBM compatible computer. It is a mini DIN plug that contains six pins
LAN/Ethernet port, also referred to as an Ethernet port, network connection, and network port, allows a computer to connect to a network using a wired connection.
USB 2.0 ports were released in April 2000, adding a higher maximum signaling rate of 480 Mbit/s (60 MB/s) named High Speed or High Bandwidth, in addition to the USB 1.x Full Speed signaling rate of 12 Mbit/s.
A network is one of the original uses of the serial port, which allowed two computers to connect together and allow large files to be transferred between the two
The parallel port is found on the back of IBM compatible computers and is a 25-pin (type DB-25) computer interface commonly used to connect printers to the computer.