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
Parallel port, also referred to as the Centronics Interface, Centronics connector, or Centronics port, was developed by Epson.
IEEE 1394 port, also known as FireWire, is used primarily for connecting audio or video devices to the console.
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.
Microphone port is where you connect a microphone to a computer depends on the connector the microphone utilizes.
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.
VGA port, short for Video Graphics Adapter or Video Graphics Array, was developed by IBM and introduced in 1987.
The VGA connector has 15 holes, and each hole (pin) has its own function, as explained in the below chart.
Serial port - An asynchronous port on the computer used to connect a serial device to the computer and capable of transmitting one bit at a time
Serial ports are usually identified on IBM compatible computers as COM (communications) ports
Various hardware components can be purchased and used with your serial port, including a mouse, modem, network, and printer.
A mouse is one of the most commonly used devices for serial ports, usually used with computers with no PS/2 or USB ports and specialty mice
A modem is another commonly used device for serial ports, often used with older computers but also for its ease of use.
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
A printer is not a commonly used device for serial ports, however, it was frequently used with older printers and plotters.
PS/2 Keyboard port - The PS/2 (Personal System/2) port, also referred to as the keyboard port was developed by IBM.
The PS/2 keyboard port is used to connect a computer keyboard to an IBM compatible computer.
The PS/2 port is a mini DIN plug that contains six pins and is still sometimes found on all IBM compatible computers.
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.