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2. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   Such devices can use an external power supply, which is allowed by the standard, or use a dual-input USB cable, one input of which is for power and data transfer, the other solely for power, which makes the device a non-standard USB device. Some USB ports and external hubs can, in practice, supply more power to USB devices than required by the ...

3. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   The USB-IF used WiGig Serial Extension v1.2 specification as its initial foundation for the MA-USB specification and is compliant with SuperSpeed USB (3.0 and 3.1) and Hi-Speed USB (USB 2.0). Devices that use MA-USB will be branded as "Powered by MA-USB", provided the product qualifies its certification program. [106]

4. USB flash drive - Wikipedia

   en.wikipedia.org/wiki/USB_flash_drive

   Flash memory cards, e.g., Secure Digital cards, are available in various formats and capacities, and are used by many consumer devices. However, while virtually all PCs have USB ports, allowing the use of USB flash drives, memory card readers are not commonly supplied as standard equipment (particularly with desktop computers).

5. USB communications - Wikipedia

   en.wikipedia.org/wiki/USB_communications

   ENDP: Select endpoint hardware source/sink buffer on device. (E.g. PID OUT would be for sending data from host source buffer into the USB device sink buffer.) By default, all USB devices must at least support endpoint buffer 0 (EP0). This is since EP0 is used for device control and status information during enumeration and normal operation.

6. USB-C - Wikipedia

   en.wikipedia.org/wiki/USB-C

   The USB-C port can be used to connect wired accessories such as headphones. There are two modes of audio output from devices: digital and analog. There are primarily two types of USB-C audio adapters: active, e.g. those with digital-to-analog converters (DACs), and passive, without electronics. [91] [92]

7. Stay Connected With Your Older Devices With These Best USB-C Hubs

   www.aol.com/lifestyle/stay-connected-older...

   If you’re looking to connect a bunch of USB devices—and don’t need Ethernet, SD, VGA, or HDMI connections—look for an adapter with USB 3.0 ports (the current standard for USB-A).