USB

• USB stands for Universal Serial Bus.
• Standard type of connects for many different kinds of devices.
• USB symbol is show in below figure.

• USB in was introduced in order to make the singular port to all usage.
• USB working specialty is, it can be used for power transfer and data transfer.

Types of USBs

Type A:

• USB Type A is most commonly used USB port.
• This port is used for the host Controllers(i.e., HUB, Computers).
• This USB port as 4 pins.
• 2 pins for Data and two pins for Host.

Type B:

• USB Type B is the port  invented because to make difference between host and peripherals.
• Type B are used for the peripherals(i.e., Printers, Scanners).
• Type B also contain 4 pins.

• Type B as two other types due to sizes.
• Mini B

• Micro B

• Mini B and Micro B as either 4 pins or 5 pins(5th pin used as id of device in OTG).

Type C:

• USB Type C is the newly invented type.
• It can be connected in any type of side.
• It contains 24 pins.
• It can be used as Host and Peripherals.

USB versions:

Version 1.0:

• Released in 1996.
• Speed Range is 1.5 Mbps to 12 Mbps (Mega Bits Per Second).
• Speed name is Low Speed or Full Speed.
• USB either in Black/White Color.

Version 2.0:

• Released in  April 2000.
• Speed Range is 60 Mbps to 480 Mbps(Mega Bits Per Second).
• Speed name is High Speed
• USB either Black/ White Color.

Version 3.0:

• Released in 2008.
• Speed Range is 60 MBps(Mega Bytes Per Second) to 5 Gbps (Gega Bits Per Second).
• Super Speed.
• USB is blue color.
• USB of all types contains extra 5 pins compared to old versions.
• There are sub versions in this.
• 3.1 (10 Gbps)
• 3.2 (20 Gbps)
• Speed name is Super Speed Plus.