You usually see two of these ports in older computers, one for a keyboard and mouse each. PS/2 ports are 6-pin connectors that were used to connect legacy keyboards and mice. Now let’s take a look at the most common computer ports and their functions one by one. There has been some initiative to unify all various port types in the form of USB-C in recent times, however, that does not change the fact that there is still legacy hardware that uses various different types of ports. By providing a junction point where the peripherals can attach, they enable the peripherals to communicate with the CPU and carry out their normal functionalities.Īs to why there are so many different ports of varying shapes and sizes, the simple answer lies in the fact that various peripherals have varying compatibility, bandwidth, optimization, and shape requirements. Peripherals such as keyboards, mice, monitors, speakers, external storage device, etc all need a method to communicate with your computer. A computer port is a junction or a connecting point between a peripheral device and your computer.
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