What is USB 2.0? - Explained

What is USB 2.0? - Explained

USB extension Cable. Image by Internet.

What is USB 2.0?

USB 2.0 introduced to the world in 2000 or the millennium. After succeeding from the USB 1.0 and USB 1.1, the further advancement to the USB is made out by the generation 2.0 or the USB Version 2.0.


USB 2.0 carried a high speed bandwidth at 480Mbit/s at the highest speed. Apart from the USB Type A and Type B, There were multiple standards introduced into the technology world.

Charging batteries by using the USB also got possible with USB 2.0 Protocol for the attached devices. In USB 2.0, the charging or current flow of 1.5A by using the current flow connectors were possible and a highest current flow of 5A also got possible with the USB 2.0.

USB 2.0 started supporting USB OTG or USB On the Go connectivity. OTG or USB on the go connectivity allows the users to operate mobile devices by using the OTG Connectivity.

In USB 1.0 and 1.1 the capability was only for connect one device to a one USB cable. But with the advancements to the specification in USB 2.0, users got the capability to connect 127 devices to one single USB port by using extension cables.

In addition to the existing USB Type A and USB Type B, there were multiple port types introduced in the world as below.

Socket TypesTypeSocket Image
StandardType A

Type B

Mini A

Mini B

Mini AB

Micro B

Micro AB

Since many computers didn't had USB 2.0 ports or USB ports in the motherboard, there were certified manufactures of USB who developed PIC Express cards with USB ports which can be plugged into the motherboard directly and use.