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USB

What is it?

  • Short for Universal Serial Bus.

  • It is a standard type of connection for many different kinds of devices.

  • Allows a computer to communicate with peripheral and other devices.

  • Most widely used interface on the computer.

Types of USB

  • It is an industry standard that defines cables, connectors and communications protocols for connection, communication, and power supply between computers and devices.

USB Versions :

  •  There have been three major USB standards, 3.1 being the newest:

  • USB 1.1 : 

  • Called Full Speed USB.

  • USB 1.1 devices can reach a maximum transmission rate of 12 Mbps.

  • USB 2.0 : 

  • Called High-Speed USB.

  • USB 2.0 compliant devices can reach a maximum transmission rate of 480 Mbps. 

  • USB 3.0 : 

  • Called SuperSpeed USB.

  • USB 3.0 compliant hardware can reach a maximum transmission rate of 5 Gbps (5,120 Mbps). 

  • USB 3.1 : 

  • Called Superspeed+.

  • USB 3.1 compliant devices are able to transfer data at 10 Gbps (10,240 Mbps). 

USB Port

  • USB ports allow USB devices to be connected each other and transfer digital data over USB cables.

  • All computers have at least one USB port.

  • Below are some the USB ports in :

  • Smartphone

  • Mobile

  • Lapbtop

  • Desktop computer

  • Mp3 player

USB 2.0

Type A 

USB 2.0

Micro B

USB 3.0

Type C 

  • There are several USB connectors as with version and their no. of pins in given picture.

USB 1.0 - 2.0

USB 3.0 - 3.1

Mini - A

Mini - B

Micro - B

Micro - A

Micro - B

C

Type - A

Type - B

Type - B

Type - A

Smartphone

Monitor

Laptop

Desktop computer

USB Devices

  • Any peripheral device that plugs into the computer via the USB port.​

  • There are lots of different USB devices that can be connected to your computer.

  • We often use USB dives around us like;

  • Keyboard

  • Mouse

  • Printer

  • Scanner

  • Smartphone

  • Webcam

  • External drive

  • Digital camera

  • Pendrive

  • and more

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