Last modified on 23 April 2015, at 20:47

A+ Certification/Exam Objectives/Hardware/Basics/Ports

Ports on the computer are used to send or receive data. Physical ports are usually found in the back of the system and allow connecting devices to the computer.

The most common ports are:

Port name Image Description
9-pin Serial
25-pin Serial
SCSI Small Computer Systems Interface.
Audio Used to connect audio devices, such as speakers, microphones, etc.
Universal Serial Bus (USB) An external bus which can support up to 127 peripheral devices daisy chained on a single port. It is quickly replacing serial and parallel ports.