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# Universal Serial Bus (USB) Ports and Cables Most peripherals will connect to your computer using a external USB port. This port is rectangular in shape and inscribed with a small logo. USB ports come in three sizes: * The standard size * The mini size * The micro size Three types of USB ports ar...

# Universal Serial Bus (USB) Ports and Cables Most peripherals will connect to your computer using a external USB port. This port is rectangular in shape and inscribed with a small logo. USB ports come in three sizes: * The standard size * The mini size * The micro size Three types of USB ports are available in the standard size: * USB type A port * USB type B port * USB Type-C port (USB Type-C® and USB-C® are registered trademarks of the USB Implementers Forum) ## The USB Type A Ports The USB 2.0 port, which is usually black, and the USB 3.0 port, which is usually blue, are both USB type A ports. The main difference between the two is the speed at which the transfer of data takes place. The USB 3.0 transfers data at a faster speed than the USB 2.0. A variety of devices can be connected to these ports, such as external hard drives, printers, mice, scanners, flash drives and many more. The USB cable plugs directly into the USB port. ## USB Type B Ports A USB type B port is usually used for the cable that sends data from the computer to the printer. ## Did you know? The PS2 ports and cables are rarely used today, although they are still found on much older computers and some gaming systems. These cables and ports are both colour-coded, with purple for the keyboard and green for the mouse.