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Amazon Basics 3.0 Cable USB-A Male to USB-B Male Adapter Cord, 6 Feet, 1.8 Meters, Black

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a b "Minty Boost — The mysteries of Apple device charging". Lady Ada. 17 May 2011. Archived from the original on 28 March 2012. Before the Battery Charging Specification was defined, there was no standardized way for the portable device to inquire how much current was available. For example, Apple's iPod and iPhone chargers indicate the available current by voltages on the D− and D+ lines. When D+ = D− = 2.0V, the device may pull up to 900mA. When D+ = 2.0V and D− = 2.8V, the device may pull up to 1A of current. [53] When D+ = 2.8V and D− = 2.0V, the device may pull up to 2A of current. [54] Accessory charging adapters (ACA) [ edit ] a b Universal Serial Bus 3.0 Specification: Revision 1.0. June 6, 2011. p.531. Archived from the original on December 30, 2013 . Retrieved April 28, 2019. ACAs have three ports: the OTG port for the portable device, which is required to have a Micro-A plug on a captive cable; the accessory port, which is required to have a Micro-AB or type-A receptacle; and the charging port, which is required to have a Micro-B receptacle, or type-A plug or charger on a captive cable. The ID pin of the OTG port is not connected within plug as usual, but to the ACA itself, where signals outside the OTG floating and ground states are used for ACA detection and state signaling. The charging port does not pass data, but does use the D± signals for charging port detection. The accessory port acts as any other port. When appropriately signaled by the ACA, the portable device can charge from the bus power as if there were a charging port present; any OTG signals over bus power are instead passed to the portable device via the ID signal. Bus power is also provided to the accessory port from the charging port transparently. [50] USB Power Delivery [ edit ] The USB Type-C Charging logo ( USB4 20Gbps port) USB PD Rev. 1.0 source profiles [55] Profile As with earlier versions of USB, USB 3.0 provides power at 5volts nominal. The available current for low-power (one unit load) SuperSpeed devices is 150mA, an increase from the 100mA defined in USB 2.0. For high-power SuperSpeed devices, the limit is six unit loads or 900mA (4.5 W)—almost twice USB 2.0's 500mA. [12] :section 9.2.5.1 Power Budgeting

Archived copy" (PDF). Archived from the original (PDF) on 12 March 2016 . Retrieved 10 March 2016. {{ cite web}}: CS1 maint: archived copy as title ( link) Unlike previous standards, the USB3.0 standard does not specify a maximum cable length, requiring only that all cables meet an electrical specification: for copper cabling with AWG 26 wires, the maximum practical length is 3 meters (10ft). [13] Power and charging [ edit ] Ku, Andrew (19 June 2012). "USB Attached SCSI (UAS): Enabling Even Better USB 3.0 Performance– Faster USB 3.0 Performance: Examining UASP And Turbo Mode". Tom's Hardware . Retrieved 19 January 2014. Connectors [ edit ] Comparison of legacy USB connector plugs, omitting the current standard Type-C plugs 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.USB3.0 Standard-A receptacle (top, in the blue color " Pantone 300C"), Standard-B plug (middle), and Micro-B plug (bottom) Some non-standard USB devices use the 5V power supply without participating in a proper USB network, which negotiates power draw with the host interface. Examples include USB-powered keyboard lights, fans, mug coolers and heaters, battery chargers, miniature vacuum cleaners, and even miniature lava lamps. In most cases, these items contain no digital circuitry, and thus are not standard-compliant USB devices. This may cause problems with some computers, such as drawing too much current and damaging circuitry. Prior to the USB Battery Charging Specification, the USB specification required that devices connect in a low-power mode (100mA maximum) and communicate their current requirements to the host, which then permits the device to switch into high-power mode. a b "USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector" (PDF). October 20, 2000. Archived from the original (PDF) on April 12, 2015 . Retrieved April 28, 2019– via www.usb.org.

On-The-Go and Embedded Host Supplement to the USB Revision 3.0 Specification" (PDF). USB.org. Revision 1.1. May 10, 2012.a b Howse, Brett (August 12, 2014). "USB Type-C Connector Specifications Finalized". Archived from the original on December 28, 2014 . Retrieved December 28, 2014. OMTP Local Connectivity: Data Connectivity". Open Mobile Terminal Platform. September 17, 2007. Archived from the original on October 15, 2008 . Retrieved February 11, 2009. USB-IF announces second certified USB 3.0 host controller" (Press release). USB Implementers Forum, Inc. 16 November 2010 . Retrieved 30 August 2018. The standard connectors were designed to be more robust than many past connectors. This is because USB is hot-swappable, and the connectors would be used more frequently, and perhaps with less care, than previous connectors.

USB-A, especially when designed for the USB 3.0 standard or higher, is also still more than sufficient for many everyday homes and office applications. Even photographers and other pros who need great USB performance are often perfectly fine with USB 3.0. If you need a good balance of performance, price, and accessibility, USB-A with USB 3.0 capability is the most common choice.

USB-C at a Glance

The 20 Gbps speed is called USB 3.2 Gen 2x2, because it uses two 10 Gbps lanes to give you the 20 Gbps speed. Would it have been less confusing if they called it USB 3.2 Gen 3? Who knows? The first USB 3.0 consumer products were announced and shipped by Buffalo Technology in November 2009, while the first certified USB3.0 consumer products were announced on 5 January 2010, at the Las Vegas Consumer Electronics Show (CES), including two motherboards by Asus and Gigabyte Technology. [16] [17] a b "USB Frequently Asked Questions: Cables and Long-Haul Solutions". USB.org. Archived from the original on January 15, 2014 . Retrieved May 22, 2023.

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. a b c "USB Logo Usage Guideline" (PDF). USB.org. USB Implementers Forum. 30 November 2018 . Retrieved 27 February 2019.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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