Peripheral Cables - CompTIA A+ 220-1101 - 3.1

Professor Messer
14 May 202207:57

Summary

TLDRThis script explores the evolution of USB standards from USB 1.1 to USB 3.2, highlighting the speed and cable length advancements, and the introduction of USB-C connectors. It also covers the Thunderbolt technology, detailing its high-speed data and power capabilities, and the transition to USB-C. The script briefly touches on older serial connections like RS-232 and their current uses.

Takeaways

  • 🔌 USB is a standard method for connecting peripherals to computers, with various versions offering different speeds and cable lengths.
  • 🚀 USB 1.1 had two speeds: low speed at 1.5 Mbps with a 3m cable and full speed at 12 Mbps with a 5m cable.
  • ⏫ USB 2.0 increased the speed to 480 Mbps over a 5m cable, improving upon USB 1.1.
  • 🔄 USB 3.0, also known as SuperSpeed USB, supports 5 Gbps over a typically 3m cable, with a different connector design to accommodate higher speeds.
  • 🔌 USB connectors have evolved from Standard-A, Standard-B, Mini-B, and Micro-B to the newer USB-C, which is reversible and can handle various signal types including data and video.
  • 🔄 USB-C is a significant change, being a symmetric connector that works in any orientation and supports higher data rates.
  • 📈 With the advent of USB 3.2, the naming conventions were updated, with USB 3.1 Gen 1 becoming USB 3.2 Gen 1 and USB 3.1 Gen 2 becoming USB 3.2 Gen 2, offering higher throughputs.
  • 🔗 Thunderbolt is a high-speed connection technology that can carry both data and power, with versions 1-3 offering increasing speeds and using different physical connectors, including mini DisplayPort and USB-C.
  • 🌐 Thunderbolt 3 provides a 40 Gbps throughput using USB-C connectors and supports daisy-chaining up to six devices.
  • 🔌 Before USB, serial connections such as DB-9 and DB-25 were common for peripherals like modems, using RS-232 for serial communication.
  • 🔄 USB standards have continually evolved to accommodate higher speeds and new types of signals, reflecting the changing needs of technology and peripherals.

Q & A

  • What is USB and what is its primary use?

    -USB stands for Universal Serial Bus, and it is primarily used for connecting peripherals such as mice, keyboards, printers, and other devices to computers.

  • What were the two different speeds of USB 1.1?

    -USB 1.1 had two speeds: low speed at 1.5 megabits per second and full speed at 12 megabits per second.

  • What is the maximum cable length for USB 1.1 low speed and full speed versions?

    -The maximum cable length for USB 1.1 low speed is around 3 meters, while for the full speed version, it is 5 meters.

  • How does USB 2.0 differ from USB 1.1 in terms of speed and cable length?

    -USB 2.0 increased the maximum speed to 480 megabits per second and maintained the maximum cable length of 5 meters.

  • What is the term used to refer to the upgraded version of USB 2.0?

    -The upgraded version of USB 2.0 is referred to as USB 3.0, also known as SuperSpeed USB.

  • What is the maximum data transfer speed supported by USB 3.0 over a typical cable length?

    -USB 3.0 supports a maximum data transfer speed of 5 gigabits per second over a typical cable length of about 3 meters.

  • What are the common connectors used in USB 1.1 and 2.0 versions?

    -Common connectors in USB 1.1 and 2.0 versions include the Standard-A plug, Standard-B plug, Mini-B plug, and Micro-B plug.

  • How did USB 3.0 change the connectors to support higher speeds?

    -USB 3.0 introduced new connector designs, such as the USB 3.0 Standard-B and Micro-B plugs, which are different from their USB 2.0 counterparts to support higher speeds.

  • What is the main advantage of the USB-C connector over previous USB connectors?

    -The main advantage of the USB-C connector is its symmetric design, allowing it to be plugged in any orientation without worrying about top or bottom.

  • What does USB-C allow in addition to data transfer?

    -In addition to data transfer, USB-C allows the transmission of video and other signals.

  • How have the names of USB standards evolved with the introduction of USB 3.1 and USB 3.2?

    -With the introduction of USB 3.1, USB 3.0 was renamed to USB 3.1 Gen 1, and USB 3.1 Gen 2 became USB 3.2 Gen 2. USB 3.2 also introduced USB 3.2 Gen 1x2, which doubles the throughput of Gen 1 to 10 gigabits per second.

  • What is Thunderbolt and how does it differ from USB in terms of data transfer capabilities?

    -Thunderbolt is a high-speed serial connection capable of combining data and power on the same cable. Thunderbolt 3, for example, provides a total aggregated throughput of 40 gigabits per second, which is higher than USB 3.0 and USB 3.1 standards.

  • What are the physical connection types used by Thunderbolt in its early versions?

    -Early versions of Thunderbolt used mini DisplayPort as the physical connection type.

  • What is the maximum cable length for Thunderbolt connections over copper and fiber?

    -For copper connections, the maximum cable length is 3 meters, and for fiber connections, it is 60 meters.

  • How many devices can be daisy-chained together using Thunderbolt?

    -Up to six different devices can be daisy-chained together using Thunderbolt.

  • What were the common serial connections used before the advent of USB?

    -Before USB, nine-pin and 25-pin serial connections, such as DB-9 and DB-25 connectors, were commonly used for RS-232 serial communication, often for connecting modems.

  • What is the current common use of DB-9 and DB-25 connectors?

    -DB-9 and DB-25 connectors are currently commonly used to connect to serial consoles on peripheral devices like switches, routers, or firewalls for command-line configuration.

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関連タグ
USBThunderboltTech EvolutionPeripheral ConnectionUSB-CData TransferTech StandardsDevice ConnectivityHigh-Speed DataUSB Versions
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