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Amazon Basics USB 2.0 A-Male to Micro B Cable, 3 feet, Black

£2.37£4.74Clearance
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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] The USB3.0 standard does not directly specify a maximum cable length, requiring only that all cables meet an electrical specification: for copper cabling with AWG26 wires the maximum practical length is 3 meters (9ft 10in). [89] USB bridge cables [ edit ] 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]

The D± signals used by low, full, and high speed are carried over a twisted pair (typically unshielded) to reduce noise and crosstalk. SuperSpeed uses separate transmit and receive differential pairs, which additionally require shielding (typically, shielded twisted pair but twinax is also mentioned by the specification). Thus, to support SuperSpeed data transmission, cables contain twice as many wires and are larger in diameter. [34] USB-IF Introduces Fast Charging to Expand its Certified USB Charger Initiative". January 9, 2018 . Retrieved January 10, 2018. The USB Power Delivery specification revision3.0 defines an optional Programmable Power Supply (PPS) protocol that allows granular control over V BUS power, allowing a range of 3.3 to 21 V in 20mV steps to facilitate constant-current or constant-voltage charging. Revision 3.0 also adds extended configuration messages and fast role swap and deprecates the BFSK protocol. [57] [68] [69] The Certified USB Fast Charger logo for USB Type-C charging ports USB PD continues the use of the bilateral 5% tolerance, with allowable voltages of PDO ±5% ±0.5V (eg. for a PDO of 9.0V, the maximum and minimum limits are 9.95V and 8.05V, respectively). [42] a b c "USB Power Delivery Specifications 2.0 and 3.1" (PDF (Zipped)). USB.org. October 26, 2021. Archived (PDF (Zipped)) from the original on November 3, 2021 . Retrieved November 3, 2021.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] The first Power Delivery specification defined six fixed power profiles for the power sources. PD-aware devices implement a flexible power management scheme by interfacing with the power source through a bidirectional data channel and requesting a certain level of electrical power, variable up to 5A and 20V depending on supported profile. The power configuration protocol can use BMC coding over the CC wire if one is present, or a 24MHz BFSK-coded transmission channel on the V BUS line. 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. See the USB On-The-Go connectors section below for a more detailed summary description.

The Type-A plug. This plug has an elongated rectangular cross-section, inserts into a Type-A receptacle on a downstream port on a USB host or hub, and carries both power and data. Captive cables on USB devices, such as keyboards or mice, terminate with a Type-A plug. Since these currents are larger than in the original standard, the extra voltage drop in the cable reduces noise margins, causing problems with High Speed signaling. Battery Charging Specification 1.1 specifies that charging devices must dynamically limit bus power current draw during High Speed signaling; [51] 1.2 specifies that charging devices and ports must be designed to tolerate the higher ground voltage difference in High Speed signaling. The following 10 biggest mobile phone companies have signed the MoU: Apple, LG, Motorola, NEC, Nokia, Qualcomm, Research In Motion, Samsung, Sony Ericsson, Texas Instruments (press release), Europa, archived from the original on July 4, 2009 Many USB bridge / data transfer cables are still USB 2.0, but there are also a number of USB 3.0 transfer cables. Despite USB 3.0 being 10 times faster than USB 2.0, USB 3.0 transfer cables are only 2 - 3 times faster given their design. [ clarification needed]

Micro B Usb Cables

While converters exist between certain legacy interfaces and USB, they might not provide a full implementation of the legacy hardware. For example, a USB-to-parallel-port converter might work well with a printer, but not with a scanner that requires bidirectional use of the data pins. USB 3.0 also introduced the USB Attached SCSI protocol (UASP), which provides generally faster transfer speeds than the BOT (Bulk-Only-Transfer) protocol. Portable devices having a USB On-The-Go port may want to charge and access a USB peripheral simultaneously, yet having only a single port (both due to On-The-Go and space requirement) prevents this. Accessory charging adapters (ACA) are devices that provide portable charging power to an On-The-Go connection between host and peripheral.

USB connector guide". C2G. Archived from the original on 21 April 2014 . Retrieved 2 December 2013. The USB3.0 specification was released on 12 November 2008, with its management transferring from USB3.0 Promoter Group to the USB Implementers Forum (USB-IF) and announced on 17 November 2008 at the SuperSpeed USB Developers Conference. [29] Revision 1.2 of the specification was released in 2010. It made several changes, and increased limits including allowing 1.5A on charging downstream ports for unconfigured devices—allowing High Speed communication while having a current up to 1.5A. Also, support was removed for charging port detection via resistive mechanisms. [52] 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 female connector mounted on the host or device is called the receptacle, and the male connector attached to the cable is called the plug. [30] :2–5 – 2–6 The official USB specification documents also periodically define the term male to represent the plug, and female to represent the receptacle. [85] The legacy USB Type-A plug. This is one of many legacy types of USB connector.On January 8, 2018, USB-IF announced "Certified USB Fast Charger" logo for chargers that use "Programmable Power Supply" (PPS) protocol from the USB Power Delivery 3.0 specification. [70]

USB PowerShare Feature". dell.com. 5 June 2013. Archived from the original on 8 November 2013 . Retrieved 4 December 2013. A message pipe is bi-directional and is used for control transfers. Message pipes are typically used for short, simple commands to the device, and for status responses from the device, used, for example, by the bus control pipe number 0.

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Universal Serial Bus Type-C Cable and Connector Specification, Release 2.2. USB Implementers Forum (Technical report). USB 3.0 Promoter Group. October 2022 . Retrieved April 12, 2023.

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