Universal Serial Bus (USB)

Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers.

• How does a USB keyboard work?- YouTube by Ben Eater

Is USB a protocol?

I don’t think so right? Because there are many ways in which data is transmitted through USB.

https://www.tuxera.com/blog/comparing-protocols-for-usb-devices-which-ones-more-significant/

Different USB speeds

• USB 2.0 cables transfer data at ~0.048 GB/s = 4.8 MB/s
• USB 3.0 has transmission speeds of up to ~0.625 GB/s = 62.5 MB/s
• USB 3.1 at ~1.25 GB/s
• USB 3.2 takes advantage of all four lanes to achieve ~2.5GB/s
• USB 4.0 up to ~5 GB/s