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  2. USB hub - Wikipedia

    en.wikipedia.org/wiki/USB_hub

    Power equals voltage times current. A USB port that draws 500 mA (0.5 A) at 5 volts is drawing 2.5 watts of power. In Bus-powered USB hubs, each USB port can supply power as well as transfer data. A self-powered hub takes its power from an external power supply unit and can therefore provide full power (up to 500 mA) to every port. Self-powered ...

  3. PoweredUSB - Wikipedia

    en.wikipedia.org/wiki/PoweredUSB

    12 V and 24 V powered USB sockets, on an NCR cash register. PoweredUSB, also known as Retail USB, USB PlusPower, USB +Power, and USB Power Plus, [1] is an addition to the Universal Serial Bus standard that allows for higher-power devices to obtain power through their USB host instead of requiring an independent power supply or external AC adapter.

  4. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    To allow for voltage drops, the voltage at the host port, hub port, and device are specified to be at least 4.75 V, 4.4 V, and 4.35 V respectively by USB 2.0 for low-power devices, [a] but must be at least 4.75 V at all locations for high-power [b] devices (however, high-power devices are required to operate as a low-powered device so that they ...

  5. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    USB Power Delivery Rev. 1.0 (V. 1.3) ... The functionality of a USB device is defined by a class code sent to a USB host. ... Standard USB hub ports can provide from ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. List of technology centers - Wikipedia

    en.wikipedia.org/wiki/List_of_technology_centers

    Dulles Technology Corridor: Northern Virginia near Washington Dulles Airport; Greater Seattle; Golden Corridor: Near Chicago's O'Hare International Airport and Northwest Suburbs; Greater Reno, Nevada; I-270 Technology Corridor (also known as "DNA Alley"): [19] Area in central Montgomery County, Maryland, in the northern suburbs of Washington, D ...

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