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USB Power Delivery" (PDF). usb.org. USB-IF. October 20, 2016. Archived from the original (PDF) on December 20, 2016.
Meeting the challenge of the universal charge standard in mobile phones". Planet Analog. Archived from the original on September 9, 2012 . Retrieved June 22, 2010.Ngo, Dong (August 22, 2014). "USB Type-C: One Cable to Connect Them All". c|net. Archived from the original on March 7, 2015 . Retrieved December 28, 2014. The Type-B plug: This plug has a near square cross-section with the top exterior corners beveled. As part of a removable cable, it inserts into an upstream port on a device, such as a printer. On some devices, the Type-B receptacle has no data connections, being used solely for accepting power from the upstream device. This two-connector-type scheme (A/B) prevents a user from accidentally creating a loop. [9] [10] USB ECN USB 2.0 VBUS Max Limit". USB-IF. November 3, 2021. Archived from the original on November 3, 2021 . Retrieved November 3, 2021. The connectors the USB committee specifies support a number of USB's underlying goals, and reflect lessons learned from the many connectors the computer industry has used. The connector mounted on the host or device is called the receptacle, and the connector attached to the cable is called the plug. [1] The official USB specification documents also periodically define the term male to represent the plug, and female to represent the receptacle, though these uses are inconsistent with established definitions of connector gender. [2]
USB-IF Compliance Updates". Compliance.usb.org. 1 September 2011. Archived from the original on 3 February 2014 . Retrieved 22 January 2014. Edison's revenge". The Economist. October 19, 2013. Archived from the original on October 22, 2013 . Retrieved October 23, 2013.Oppo Super VOOC Flash Charge, are also known as Dash Charge or Warp Charge on OnePlus devices and Dart Charge on Realme devices Cai Yan (31 May 2007). "China to enforce universal cell phone charger". EE Times. Archived from the original on 29 September 2007 . Retrieved 25 August 2007. A USB (Universal Serial Bus) is a standard connection interface that enables communication between devices and a host controller such as a personal computer. It is most commonly used to connect peripherals such as mice, keyboards, printers, scanners, cameras, and flash drives to a computer.
The initial versions of the USB standard specified connectors that were easy to use and that would have acceptable life spans; revisions of the standard added smaller connectors useful for compact portable devices. Higher-speed development of the USB standard gave rise to another family of connectors to permit additional data paths. All versions of USB specify cable properties; version 3. x cables include additional data paths. The USB standard included power supply to peripheral devices; modern versions of the standard extend the power delivery limits for battery charging and devices requiring up to 240 watts. USB has been selected as the standard charging format for many mobile phones, reducing the proliferation of proprietary chargers. Here’s a table that lists major differences in speeds and performance of some USB versions. Key differences between some USB versions. USB 1.0 USB On-The-Go (OTG) introduces the concept of a device performing both host and device roles. All current OTG devices are required to have one, and only one, USB connector: a Micro-AB receptacle. (In the past, before the development of Micro-USB, On-The-Go devices used Mini-AB receptacles.)Howse, Brett. "USB Type-C Connector Specifications Finalized". AnandTech. Archived from the original on March 18, 2017 . Retrieved April 24, 2017.
a b c "10 Power Rules", Universal Serial Bus Power Delivery Specification revision3.1, version1.0, USB Implementers Forum , retrieved September 5, 2017 A bus-powered hub is a high-power device providing low-power ports. It draws 1 unit load for the hub controller and 1 unit load for each of at most 4 ports. The hub may also have some non-removable functions in place of ports. A self-powered hub is a device that provides high-power ports by supplementing the power supply from the host with its own external supply. Optionally, the hub controller may draw power for its operation as a low-power device, but all high-power ports must draw from the hub's self-power. An industrial connector is typically one that is designed for extremely hard-wearing use in a more challenging environment. This might include versions designed with:
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USB Mini are further divided into two variants: USB Mini A (or Mini USB A) and USB Mini B. These are smaller counterparts of Type A and Type B USB connectors. They are designed for their compact size, which makes them handy for smaller devices. USB Mini A and USB Mini B connectors. (Photo Credit: Wikimedia Commons) Modify a cheap USB charger to feed an iPod, iPhone". 5 October 2011. Archived from the original on 7 October 2011. Unlike other data buses (such as Ethernet), USB connections are directed; a host device has "downstream" facing ports that connect to the "upstream" facing ports of devices. Only downstream facing ports provide power; this topology was chosen to easily prevent electrical overloads and damaged equipment. Thus, USB cables have different ends: A and B, with different physical connectors for each. Each format has a plug and receptacle defined for each of the A and B ends. A USB cable, by definition, has a plug on each end—one A (or C) and one B (or C)—and the corresponding receptacle is usually on a computer or electronic device. The mini and micro formats may connect to an AB receptacle, which accepts either an A or a B plug, that plug determining the behavior of the receptacle. It is also reversible, i.e., it can be plugged in either way without worrying about which is the right side up.
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