WHAT IS USB HUB?
USB hub is a light tiny device that can make experience with USB ports easier in case your computer doesn't have enough or they are all on the back of computer. You just need to connect USB hub to the rear USB port of computer and with the help of extension cable place the hub wherever you need it to be. It can allow connection of up to 127 USB devices!
USB hubs are often built in the computers, monitors, printers, or keyboards. If you see such a device having lots of USB ports then most probably they stem from one or two internal USB ports.
Some historical facts about USB:The USB 1.0 specification was introduced in 1996. It was aimed to solve the numerousness of connectors at the computer's rear side.
The USB 2.0 specification was released in 2000 and was standardized by the USB-IF at the end of 2001.
The USB 3.0 specification was released on November 12, 2008 by the USB 3.0 Promoter Group. It is up to 10 times faster than USB 2.0.
The USB 3.1 was announced on July 31, 2013. It increases the signalling rate to 10 Gbit/s, twice more than USB 3.0. Developer sessions for developers wishing to implement this new specification began in August 2013. This USB standard is backwards compatible with USB 2.0 and USB 3.0.