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Because use of the USB logo is only permitted after compliance testing, the user can have confidence that a USB device will work as expected without extensive interaction with settings and configuration. Common Charging and Local Data Connectivity". Open Mobile Terminal Platform. February 11, 2009. Archived from the original on March 29, 2009 . Retrieved February 11, 2009. Lex Friedman (25 February 2013). "Review: Logitech's Ultrathin mini keyboard cover makes the wrong tradeoffs". macworld.com. Archived from the original on 3 November 2013 . Retrieved 29 October 2013. Even before working directly in Information Technology, Josh had a passion for technology. He rooted Android phones and flashed custom ROMs on them; gamed on all major consoles and with his PCs; and built his own computers.
Lam, Crystal; Liu, Harry (October 22, 2007). "How to conform to China's new mobile phone interface standards". Wireless Net DesignLine. Archived from the original on May 14, 2014 . Retrieved June 22, 2010.
Universal Serial Bus 1.1 Specification" (PDF). cs.ucr.edu. 23 September 1998. pp.150, 158. Archived (PDF) from the original on 2 January 2015 . Retrieved 24 November 2014. Micro-USB was endorsed as the standard connector for data and power on mobile devices by the cellular phone carrier group Open Mobile Terminal Platform (OMTP) in 2007. [17] UAC 1.0 devices are still common, however, due to their cross-platform driverless compatibility, [70] and also partly due to Microsoft's failure to implement UAC 2.0 for over a decade after its publication, having finally added support to Windows 10 through the Creators Update on 20 March 2017. [73] [74] [72] UAC 2.0 is also supported by macOS, iOS, and Linux, [67] however Android only implements a subset of the UAC 1.0 specification. [75] 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.)
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. By design, it is difficult to insert a USB plug into its receptacle incorrectly. The USB specification requires that the cable plug and receptacle be marked so the user can recognize the proper orientation. [1] The USB-C plug however is reversible. USB cables and small USB devices are held in place by the gripping force from the receptacle, with no screws, clips, or thumb-turns as other connectors use. The USB4 2.0 specification was released on 1 September 2022 by the USB Implementers Forum. [43] September 2022 naming scheme [ edit ] An overview of USB naming scheme that was put in place in September 2022. a b Universal Serial Bus Cables and Connectors Class Document (PDF), Revision 2.0, USB Implementers Forum, August 2007, p.6, archived (PDF) from the original on April 27, 2015 , retrieved August 17, 2014 Worst-case voltage drop topology of a USB 3. x host to device chain, at steady state. Note that under transient conditions the supply at the device can momentarily drop from 4.0V to 3.67V. Allowable current draw [ edit ] USB power standards
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During CES 2020, USB-IF and Intel stated their intention to allow USB4 products that support all the optional functionality as Thunderbolt 4 products. The first products compatible with USB4 are expected to be Intel's Tiger Lake series and AMD's Zen 3 series of CPU, released in 2020. In July 2012, the USB Promoters Group announced the finalization of the USB Power Delivery ( USB-PD) specification (USB PD rev. 1), an extension that specifies using certified PD aware USB cables with standard USB Type-A and Type-B connectors to deliver increased power (more than 7.5W) to devices with greater power demands. (USB-PD A and B plugs have a mechanical mark while Micro plugs have a resistor or capacitor attached to the ID pin indicating the cable capability.) USB-PD Devices can request higher currents and supply voltages from compliant hosts—up to 2A at 5V (for a power consumption of up to 10W), and optionally up to 3A or 5A at either 12V (36W or 60W) or 20V (60W or 100W). [59] In all cases, both host-to-device and device-to-host configurations are supported. [60] The wide range of transfer speeds available from a USB interface suits devices ranging from keyboards and mice up to streaming video interfaces. a b c "Universal Serial Bus Micro-USB Cables and Connectors Specification" (PDF). USB Implementers Forum. April 4, 2007. Archived (PDF) from the original on November 15, 2015 . Retrieved January 31, 2015. This article is about the physical and electrical aspects of USB connections. For the standard in general, see USB.
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