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  2. 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.

  3. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    USB Battery Charging (BC) defines a charging port, ... PoweredUSB is a proprietary extension that adds four pins supplying up to 6 A at 5 V, 12 V, or 24 V.

  4. 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 ...

  5. Common external power supply - Wikipedia

    en.wikipedia.org/wiki/Common_external_power_supply

    Common external power supply and the USB-A and USB Micro-B ends of the detachable cable. The common external power supply (Common EPS) was a European Commission (EC) specification for a universal charger for smartphones sold within the European Union.

  6. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    The IEEE 802.3af, 802.3at, and 802.3bt Power over Ethernet (PoE) standards specify more elaborate power negotiation schemes than powered USB. They operate at 48 V DC and can supply more power (up to 12.95 W for 802.3af , 25.5 W for 802.3at , a.k.a. PoE+ , 71 W for 802.3bt , a.k.a. 4PPoE ) over a cable up to 100 meters compared to USB 2.0, which ...

  7. IEC 62700 - Wikipedia

    en.wikipedia.org/wiki/IEC_62700

    IEC Technical Specification 62700: DC Power supply for notebook computer is an IEC specification of a common standard for external laptop computer AC adapters.Laptops and AC adapters following this standard will have interchangeable power supplies, which will enable easy reuse of used power supplies (thereby reducing electronic waste) and make buying a new compatible power supply for a laptop ...

  8. USB 3.0 - Wikipedia

    en.wikipedia.org/wiki/USB_3.0

    USB 3.0 port provided by an ExpressCard-to-USB 3.0 adapter may be connected to a separately-powered USB 3.0 hub, with external devices connected to that USB 3.0 hub. On the motherboards of desktop PCs which have PCI Express (PCIe) slots (or the older PCI standard), USB 3.0 support can be added as a PCI Express expansion card.

  9. Universal Power Adapter for Mobile Devices - Wikipedia

    en.wikipedia.org/wiki/Universal_Power_Adapter...

    The Universal Power Adapter for Mobile Devices (UPAMD), codename IEEE 1823-2015 (before approval P1823), is an IEEE standard for power supply design intended to cater to the power range of 10–130 W (optionally 240 W) for mobile devices like laptop computers.

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