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  2. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    Only downstream facing ports provide power; this topology was chosen to easily prevent electrical overloads and damaged equipment. Thus, USB cables have different ends: A and B, with different physical connectors for each. Each format has a plug and receptacle defined for each of the A and B ends.

  3. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    Micro-USB Cables and Connectors Specification 1.01; InterChip USB Supplement; ... A USB system consists of a host with one or more downstream facing ports (DFP), ...

  4. USB hub - Wikipedia

    en.wikipedia.org/wiki/USB_hub

    A four-port "long cable" "external box" USB hub A four-port "compact design" USB hub: upstream and downstream ports shown. A USB hub is a device that expands a single Universal Serial Bus (USB) port into several so that there are more ports available to connect devices to a host system, similar to a power strip. All devices connected through a ...

  5. USB4 - Wikipedia

    en.wikipedia.org/wiki/USB4

    USB4 Gen3x2 cable (40 Gbps) with 100 W Power Delivery. USB4 (Universal Serial Bus 4), correctly known as USB 4.0, is the most recent technical specification of the USB (Universal Serial Bus) data communication standard.

  6. USB-C - Wikipedia

    en.wikipedia.org/wiki/USB-C

    Whereas earlier USB cables had a host end A and a peripheral device end B, a USB-C cable connects either way; and for interoperation with older equipment, there are cables with a Type-C plug at one end and either a Type-A (host) or a Type-B (peripheral device) plug at the other. The designation "C" refers only to the connector's physical ...

  7. USB communications - Wikipedia

    en.wikipedia.org/wiki/USB_communications

    USB ports and cables are used to connect hardware such as printers, scanners, keyboards, mice, flash drives, external hard drives, joysticks, cameras, monitors, and more to computers of all kinds. USB also supports signaling rates from 1.5 Mbit/s (Low speed) to 80 Gbit/s (USB4 2.0) depending on the version of the standard.

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