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Voltage tolerance and limits [ edit ] Worst-case voltage drop topology of a USB 2.0 host to low-power device chain, at steady state USB cables, or Universal Serial Bus cables, are widely used for connecting various electronic devices to each other or to a computer. They provide a standardized interface for data transfer, power supply, and peripheral connectivity. USB cables have different types and connectors, each designed for specific purposes and device compatibility. Here are some commonly used USB cable types:
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. The different A and B plugs prevent accidentally connecting two power sources. However, some of this directed topology is lost with the advent of multi-purpose USB connections (such as USB On-The-Go in smartphones, and USB-powered Wi-Fi routers), which require A-to-A, B-to-B, and sometimes Y/splitter cables. It's important to note that USB cables can have different versions, such as USB 2.0, USB 3.0, USB 3.1, and USB 3.2, which determine their maximum data transfer speeds. The USB cable you need will depend on the specific devices you want to connect or charge. Where are USB cables used? Two USB3.0 Standard-A receptacles (left) and two USB2.0 Standard-A receptacles (right) on a computer's front panel Various legacy USB and related connectors (left to right): USB Micro-B plug, proprietary UC-E6 plug, USB Mini-B plug, Standard-A-like receptacle (non-compliant), Standard-A plug, Standard-B plug. Shown with a centimeter ruler.A mix of USB specifications and their marketing names are being displayed because specifications are sometimes wrongly used as marketing names.) [ disputed(for: USB4 20Gbps does not exist; USB4 2×2 is not interchangeable with USB 3.2 2×2 as indicated by the logo; logos for USB 3.x and USB4 are different.) – discuss] The USB Device Working Group has laid out specifications for audio streaming, and specific standards have been developed and implemented for audio class uses, such as microphones, speakers, headsets, telephones, musical instruments, etc. The working group has published three versions of audio device specifications: [65] [66] USB Audio1.0, 2.0, and 3.0, referred to as "UAC" [67] or "ADC". [68]
USB connector guide". C2G. Archived from the original on 21 April 2014 . Retrieved 2 December 2013. The maximum allowed cross-section of the overmold boot (which is part of the connector used for its handling) is 16 by 8mm (0.63 by 0.31in) for the Standard-A plug type, while for the Type-B it is 11.5 by 10.5mm (0.45 by 0.41in). [2] Mini connectors [ edit ] Mini-A (left) and Mini-B (right) plugsLex 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. Connector properties [ edit ] Non-standard "USB extension cable", plug on the left, receptacle on the right. (USB does not allow extension cables. Non-standard cables may work but cannot be presumed reliable.) The PCI Express function of USB4 replicates the functionality of previous versions of the Thunderbolt specification. In addition to limiting the total average power used by the device, the USB specification limits the inrush current (i.e., the current used to charge decoupling and filter capacitors) when the device is first connected. Otherwise, connecting a device could cause problems with the host's internal power. USB devices are also required to automatically enter ultra low-power suspend mode when the USB host is suspended. Nevertheless, many USB host interfaces do not cut off the power supply to USB devices when they are suspended. [100]
In June 2009, the European Commission organized a voluntary Memorandum of Understanding (MoU) to adopt micro-USB as a common standard for charging smartphones marketed in the European Union. The specification was called the common external power supply. The MoU lasted until 2014. The common EPS specification (EN 62684:2010) references the USB Battery Charging Specification and is similar to the GSMA/OMTP and Chinese charging solutions. [94] [95] In January 2011, the International Electrotechnical Commission (IEC) released its version of the (EU's) common EPS standard as IEC 62684:2011. [96]Micro-USB pinout and list of compatible smartphones and other devices". pinoutsguide.com. Archived from the original on October 10, 2013. Oppo Super VOOC Flash Charge, are also known as Dash Charge or Warp Charge on OnePlus devices and Dart Charge on Realme devices See also: USB mass storage device class, Disk enclosure, and External hard disk drive A flash drive, a typical USB mass-storage device An M.2 (2242) solid-state-drive ( SSD) connected into USB 3.0 adapter and connected to computer
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