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CompTIA A+

Universal Serial Bus (USB)

15 min read

The Universal Serial Bus, commonly known as USB, revolutionized how we connect devices when it was introduced in the mid-1990s. Before USB, computers required different ports for keyboards, mice, printers, and other peripherals—each with its own connector type and configuration requirements. USB changed everything by providing a single, standardized connection method that could handle multiple device types.


Today, USB technology is the backbone of mobile device connectivity. Whether you're charging your smartphone, transferring files from a tablet, or connecting a laptop to external peripherals, you're utilizing USB technology.

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