IT Fundamentals: Peripheral Devices

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Last updated 9:55 PM on 8/31/26
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6 Terms

1
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USB

Universal Serial Bus

  • used to connect computers and devices for power and data transfer

  • USB-A, -B, -C


2
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USB-A

  • most common

  • connects to host computers to provide power and data to peripherals (flash drives, keyboards, mice, etc)

  • rectangular


3
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USB-B

  • square w/beveled top corner

  • allows connection to “downstream” devices (printers, scanners)

  • repeated plugging and unplugging


4
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USB-C

  • reversible

  • supports ultra-high speed data, alternate mode video, and up to 100 W of power transfer


5
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Bluetooth

short-range wireless technology used for connecting devices over short distances (keyboards, headphones to other devices)

  • uses low power

  • uses ultra high frequency radio waves

  • frequency hopping

  • does not need Wi-Fi router/internet access point

  • reduces interferences


6
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USB Lightning

connects iPhones, iPods, and iPads to host computers, external monitors, cameras, battery chargers, and other peripherals

  • developed by Apple

  • used for data transfer and charging

  • small, reversible connector (no need to flip)

  • more expensive