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2. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   USB was designed to standardize the connection of peripherals to personal computers, both to exchange data and to supply electric power. It has largely replaced interfaces such as serial ports and parallel ports and has become commonplace on various devices.

3. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   The USB Power Delivery specification revision 2.0 (USB PD Rev. 2.0) has been released as part of the USB 3.1 suite. [65] [72] [73] It covers the USB-C cable and connector with a separate configuration channel, which now hosts a DC coupled low-frequency BMC-coded data channel that reduces the possibilities for RF interference. [74]

4. 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.

5. USB-C - Wikipedia

   en.wikipedia.org/wiki/USB-C

   USB-C plug USB-C (SuperSpeed USB 5Gbps) receptacle on a laptop. USB-C, or USB Type-C, is a 24-pin, reversible connector (not a protocol) that supersedes previous USB connectors and can carry audio, video, and other data, to connect to monitors, external drives, hubs/docking stations, mobile phones, and many more peripheral devices.

6. USB4 - Wikipedia

   en.wikipedia.org/wiki/USB4

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

7. Battery charger - Wikipedia

   en.wikipedia.org/wiki/Battery_charger

   Since the Universal Serial Bus specification provides five-volt power, it is possible to use a USB cable to connect a device to a power supply. Products based on this approach include chargers for cellular phones, portable digital audio players, and tablet computers. They may be fully compliant USB peripheral devices or uncontrolled, simple ...