The limit to device power draw is stated in terms of a unit load which is 100mA for USB 2.0, or 150mA for SuperSpeed (i.e. USB 3. x) devices. Low-power devices may draw at most 1 unit load, and all devices must act as low-power devices before they are configured. A high-powered device must be configured, after which it may draw up to 5 unit loads (500mA), or 6 unit loads (900mA) for SuperSpeed devices, as specified in its configuration because the maximum power may not always be available from the upstream port. [43] [44] [45] [46] The Micro plug design is rated for at least 10,000 connect-disconnect cycles, which is more than the Mini plug design. [13] [16] The Micro connector is also designed to reduce the mechanical wear on the device; instead, the easier-to-replace cable is designed to bear the mechanical wear of connection and disconnection. The Universal Serial Bus Micro-USB Cables and Connectors Specification details the mechanical characteristics of Micro-A plugs, Micro-AB receptacles (which accept both Micro-A and Micro-B plugs), Double-Sided Micro USB, and Micro-B plugs and receptacles, [16] along with a Standard-A receptacle to a Micro-A plug adapter. The OTG device with the A-plug inserted is called the A-device and is responsible for powering the USB interface when required, and by default assumes the role of host. The OTG device with the B-plug inserted is called the B-device and by default assumes the role of peripheral. An OTG device with no plug inserted defaults to acting as a B-device. If an application on the B-device requires the role of host, then the Host Negotiation Protocol (HNP) is used to temporarily transfer the host role to the B-device.

Oppo Super VOOC Flash Charge, are also known as Dash Charge or Warp Charge on OnePlus devices and Dart Charge on Realme devices

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Pros Seem to Outdo Cons in New Phone Charger Standard". News.com. September 20, 2007 . Retrieved November 26, 2007. The Micro-AB receptacle is capable of accepting Micro-A and Micro-B plugs, attached to any of the legal cables and adapters as defined in revision 1.01 of the Micro-USB specification.

How to configure the system to charge devices over USB port when it is off - idea/Lenovo laptops - NL". support.lenovo.com . Retrieved April 7, 2020. The GSM Association (GSMA) followed suit on February 17, 2009, [88] [89] [90] [91] and on April 22, 2009, this was further endorsed by the CTIA – The Wireless Association, [92] with the International Telecommunication Union (ITU) announcing on October 22, 2009, that it had also embraced the Universal Charging Solution as its "energy-efficient one-charger-fits-all new mobile phone solution," and added: "Based on the Micro-USB interface, UCS chargers will also include a 4-star or higher efficiency rating—up to three times more energy-efficient than an unrated charger." [93] EU smartphone power supply standard [ edit ] What is the Maximum Length of a USB Cable?". Techwalla.com. Archived from the original on December 1, 2017 . Retrieved November 18, 2017. Full-featured USB-C 3.1 cables are electronically marked cables that contain a full set of wires and a chip with an ID function based on the configuration data channel and vendor-defined messages (VDMs) from the USB Power Delivery 2.0 specification. USB-C devices also support power currents of 1.5A and 3.0A over the 5V power bus in addition to baseline 900mA; devices can either negotiate increased USB current through the configuration line or they can support the full Power Delivery specification using both BMC-coded configuration line and legacy BFSK-coded V BUS line. [ citation needed] USB Type-A is the most common form of USB. You’ll see this rectangular-shaped USB connector on most USB cables. You’ll also find USB Type-A ports on things such as laptops, desktops, and TVs. USB Type-B Cable

Please note:

USB Sleep-and-Charge Ports". toshiba.com. Archived from the original on 14 December 2014 . Retrieved 21 December 2014. The Chinese technical standard: "YD/T 1591-2006, Technical Requirements and Test Method of Charger and Interface for Mobile Telecommunication Terminal Equipment" (PDF). Dian yuan (in Chinese). Archived from the original (PDF) on 15 May 2011.

As of USB Power Delivery specification revision2.0, version1.2, the six fixed power profiles for power sources have been deprecated. [67] USB PD Power Rules replace power profiles, defining four normative voltage levels at 5V, 9V, 15V, and 20V. Instead of six fixed profiles, power supplies may support any maximum source output power from 0.5W to 100W.a b "10 Power Rules", Universal Serial Bus Power Delivery Specification revision2.0, version1.2, USB Implementers Forum, 25 March 2016, archived from the original on 1 June 2012 , retrieved 9 April 2016 Hill, Simon; Revilla, Andre; Chandler, Simon (July 1, 2021). "How does fast charging work? Here's every single standard compared". Digital Trends . Retrieved August 20, 2022. Universal Serial Bus Revision 3.0 Specification, Sections 3.1.1.1 and 5.3.1.3". Usb.org. Archived from the original (ZIP) on 19 May 2014 . Retrieved 28 April 2019.