Difference Between USB Type C and A and B

What is a USB Type C?

USB Type C is a newer type of USB connector designed to be reversible, meaning it can be plugged into a device in either orientation. It is also smaller than previous USB connectors, making it more convenient to use with smaller devices. In addition, USB Type C supports higher data transfer speeds and can deliver more power than previous USB connectors. It is becoming increasingly common on newer devices such as laptops, smartphones, and tablets.

One of the key benefits of USB Type C is its versatility. It can be used for many functions, including charging devices, transferring data, and connecting to external displays. It can also support various protocols, such as USB 3.1, HDMI, and DisplayPort, allowing it to be used with a wide range of devices and peripherals. Overall, USB Type C significantly improved over previous USB connectors and is becoming the standard for many newer devices.

What is a USB Type A?

USB Type A is a common USB connector found on many devices such as computers, laptops, and external hard drives. It is a rectangular-shaped connector with a flat, rectangular face and two or four pins on the back. The Type A connector connects devices to a host computer or device, such as a printer or external hard drive.

One of the benefits of using USB Type-A connectors is their compatibility with a wide range of devices. Most computers and laptops have a Type A port, so it is easy to connect various devices without needing adapters or other special connectors. Type A connectors are also widely available, making it easy to find cables and other accessories.

What is a USB Type B?

A computer may be connected to peripherals like printers, scanners, and external hard drives using a USB Type B port. It is typically found on the device side, while a Type A connector is on the computer side. The Type B connector has a square shape with two rows of pins, while the Type A connector has a rectangular shape with one row of pins.

USB Type B has a higher data transfer rate than its predecessor, USB 1.1. It is also backward compatible with USB 1.1 devices, allowing for a seamless connection between older and newer devices. In addition, USB Type B connectors are more durable and resistant to damage than other USB connectors. This makes them a popular choice for devices that may frequently be unplugged and plugged back in.

Difference Between USB Type C and USB Type A, and USB Type B

  • USB Type C supports the fastest data transfer speeds; USB Type A faster; USB Type B provides slow data transfer.
  • USB Type C can also support alternate modes such as HDMI and DisplayPort, while USB Type A does not have this; USB Type B does not.
  • USB Type C can be used as a host or device port; USB Type A is commonly found on computers as a host port; USB Type B is often found on peripherals.
  • USB Type C is smaller and more reversible; USB Type A is a bit larger; USB Type is quite bigger in size.
  • USB Type C is quickly becoming the standard for new devices; USB Type A is older in history; USB Type B is the oldest.

Comparison Between USB Type C and USB Type A, and USB Type B

Parameters of ComparisonUSB Type CUSB Type AUSB Type B
Transfer SpeedFastestFasterSlower
Alternative ModesHDMI, DisplayPortNot AvailableNot Supported
SupportabilityHost/Device PortHost PortPeripherals
RelevanceHighly RelevantLess RelevantLess Relevant


  1. https://books.google.com/books?hl=en&lr=&id=6j-eukA_VOQC&oi=fnd&pg=PA1&dq=USB+types&ots=iZZqstDEeY&sig=Yrv9VfAz4ph35iOI393PvyBrR-Y
  2. https://ww1.microchip.com/downloads/en/Appnotes/00001953A.pdf