Have you wondered, what does USB stand for? Well the answer is simple: universal serial bus. While that may answer the question, it does little to explain what the term actually means. Let's take a deeper look into USB ports and USB devices.

Many a times, when you plug in a Universal Serial Bus (USB) compliant device like a USB mouse, keyboard or even a USB flash drive, either there's no response from the computer or you get a message 'USB Device Not Recognized' along with a popping sound. Why does this happen? Why is the USB not working? There may be many reasons for this to happen, like virus infection, driver, connection or power problem, etc. There are a few ways in which one can rectify this and also avoid encountering this error again in future.