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2. AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

   An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.

3. DC connector - Wikipedia

   en.wikipedia.org/wiki/DC_connector

   After previous connectors were deprecated in USB 3.2, the new USB-C plug has become a new standard for charging (and data transfer) over USB. [ 13 ] In the European Union, the Radio Equipment Directive 2021/0291 , requires new smartphones to use USB-C as a universal charger by the end of 2024, and laptops by 2026.

4. Adapter - Wikipedia

   en.wikipedia.org/wiki/Adapter

   Adapters (sometimes called dongles) allow connecting a peripheral device with one plug to a different jack on the computer. They are often used to connect modern devices to a legacy port on an old system, or legacy devices to a modern port. Such adapters may be entirely passive, or contain active circuitry. A common type is a USB adapter.

5. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   The USB 3.0 Micro-B plug effectively consists of a standard USB 2.0 Micro-B cable plug, with an additional 5 pins plug "stacked" to the side of it. In this way, cables with smaller 5 pin USB 2.0 Micro-B plugs can be plugged into devices with 10 contact USB 3.0 Micro-B receptacles and achieve backward compatibility.

6. USB hub - Wikipedia

   en.wikipedia.org/wiki/USB_hub

   100 W wall charger, 100 W USB-C cable. USB Multiport adapter: 100 W USB-C PD port, integrated 100 W USB cable. Output -30 W Smartphone charging: The USB Multiport adapter integrated 100 W USB cable connected to the phone, and the USB-C cable connected to the USB multiport hub PD port, and the wall charger. Output -1.5 W 8k HDMI cable connected ...

7. AC power plugs and sockets - Wikipedia

   en.wikipedia.org/wiki/AC_power_plugs_and_sockets

   As early as 1885 a two-pin plug and wall socket format was available on the British market. By about 1910 the first three-pin earthed (grounded) plugs appeared. Over time other safety improvements were gradually introduced to the market. The earliest national [clarification needed] standard for plug and wall socket forms was set in 1915.