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2. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   Dedicated charging ports can be found on USB power adapters to run attached devices and battery packs. Charging ports on a host with both kinds will be labeled. [59] The charging device identifies a charging port by non-data signaling on the D+ and D− terminals. A dedicated charging port places a resistance not exceeding 200 Ω across the D+ ...

3. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   USB connectors have been increasingly replacing other types of charging cables for portable devices. USB connector interfaces are classified into three types: the many various legacy Type-A (upstream) and Type-B (downstream) connectors found on hosts, hubs, and peripheral devices, and the modern Type-C connector, which replaces the many legacy ...

4. Universal charger - Wikipedia

   en.wikipedia.org/wiki/Universal_charger

   Power Delivery provides the ability for 5 V devices to draw more than 7.5 W of power (the limit specified by USB Battery Charging) from USB PD-aware ports when using PD-aware USB cables. The specification also allows PD ports to provide even greater power at higher voltages over PD-aware cables; up to 36 W at 12 V and 60 W at 20 V (for micro ...

5. USB On-The-Go - Wikipedia

   en.wikipedia.org/wiki/USB_On-The-Go

   USB OTG is a part of a supplement [2] to the Universal Serial Bus (USB) 2.0 specification originally agreed upon in late 2001 and later revised. [3] The latest version of the supplement also defines behavior for an Embedded Host which has targeted abilities and the same USB Standard-A port used by PCs.

6. Common external power supply - Wikipedia

   en.wikipedia.org/wiki/Common_external_power_supply

   The resulting directive, Radio Equipment Directive 2021/0291 requires all hand-held items sold from 2024 onward to have and be able to charge via a USB Type-C port. [29] Manufacturers would also be required to offer consumers the option of purchasing their devices without any charging device.

7. PoweredUSB - Wikipedia

   en.wikipedia.org/wiki/PoweredUSB

   PoweredUSB uses a more complex connector than standard USB, maintaining the standard connector of USB 1.x and USB 2.0 interface for data communications and adding a second connector for power. Physically, it is essentially two connectors stacked such that the bottom connector accepts a standard USB plug and the top connector takes a power plug.