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a b c "10 Power Rules", Universal Serial Bus Power Delivery Specification revision3.1, version1.0, USB Implementers Forum , retrieved September 5, 2017 What is the Maximum Length of a USB Cable?". Techwalla.com. Archived from the original on December 1, 2017 . Retrieved November 18, 2017. USB connector guide". C2G. Archived from the original on 21 April 2014 . Retrieved 2 December 2013.
USB Power Delivery" (PDF). usb.org. USB-IF. October 20, 2016. Archived from the original (PDF) on December 20, 2016.USB PowerShare Feature". dell.com. 5 June 2013. Archived from the original on 8 November 2013 . Retrieved 4 December 2013. What is the Difference between USB Type A and USB Type B Plug/Connector?". Archived from the original on February 7, 2017. Apple's Lightning to Micro-USB adapter now available in US, not just Europe anymore", Engadget, 3 November 2012, archived from the original on 26 June 2017 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.
USB specs defined two types of Devices at first. A devices, i.e. Hosts like your pc, and B Devices, i.e. Peripherals like a printer. At first, only standard size existed. Then mobile devices needing a smaller connecter, Mini-B was created. It is still for Peripherals only. Then OTG was added, creating the need for Mini-A (Miniature Host) and Mini-AB (Mixed, OTG device). What is the difference between my USB Mini B and Mini A cables? Do they have the same performance when plugged between my external hard drive and my computer? If not, which type would be better and how? Universal Serial Bus 2.0 Specification, Section 7.2.1.3 Low-power Bus-powered Functions" (ZIP). usb.org. 27 April 2000. Archived from the original on 10 September 2013 . Retrieved 11 January 2014.
Upstream USB connectors supply power at a nominal 5 V DC via the V_BUS pin to downstream USB devices. Commission welcomes new EU standards for common mobile phone charger". Press Releases. Europa. December 29, 2010. Archived from the original on March 19, 2011 . Retrieved May 22, 2011. The intent is to permit uniformly charging laptops, tablets, USB-powered disks and similarly higher-power consumer electronics, as a natural extension of existing European and Chinese mobile telephone charging standards. This may also affect the way electric power used for small devices is transmitted and used in both residential and public buildings. [61] [62] The standard is designed to coexist with the previous USB Battery Charging specification. [63]
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