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

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a b "10 Power Rules", Universal Serial Bus Power Delivery Specification revision3.0, version1.1, USB Implementers Forum, archived from the original on June 1, 2012 , retrieved September 5, 2017

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Because of the previous confusing naming schemes, USB-IF decided to change it once again. As of 2 September 2022, marketing names follow the syntax "USB xGbps", where x is the speed of transfer in Gb/s. [44] Overview of the updated names and logos can be seen in the adjacent table. As of 2023, [update] USB consists of four generations of specifications: USB 1. x, USB 2.0, USB 3. x, and USB4. USB4 enhances the data transfer and power delivery functionality withEdison's revenge". The Economist. October 19, 2013. Archived from the original on October 22, 2013 . Retrieved October 23, 2013. The 24-pin double-sided connector provides four power–ground pairs, two differential pairs for USB2.0 data (though only one pair is implemented in a USB-C cable), four pairs for SuperSpeed data bus (only two pairs are used in USB 3.1 mode), two "sideband use" pins, V CONN +5V power for active cables, and a configuration pin for cable orientation detection and dedicated biphase mark code (BMC) configuration data channel. [27] [28] Type-A and Type-B adaptors and cables are required for older hosts and devices to plug into USB-C hosts and devices. Adapters and cables with a USB-C receptacle are not allowed. [29] There are several minimum allowable voltages defined at different locations within a chain of connectors, hubs, and cables between an upstream host (providing the power) and a downstream device (consuming the power). To allow for voltage drops, the voltage at the host port, hub port, and device are specified to be at least 4.75V, 4.4V, and 4.35V respectively by USB2.0 for low-power devices, [a] but must be at least 4.75V at all locations for high-power [b] devices (however, high-power devices are required to operate as a low-powered device so that they may be detected and enumerated if connected to a low-power upstream port). The USB3. x specifications require that all devices must operate down to 4.00V at the device port. Universal Serial Bus Revision 3.0 Specification, Sections 3.1.1.1 and 5.3.1.3". Usb.org. Archived from the original (ZIP) on 19 May 2014 . Retrieved 28 April 2019. USB Sleep-and-Charge Ports". toshiba.com. Archived from the original on 14 December 2014 . Retrieved 21 December 2014.

USB Connector and Cable Types | A Full Guide Identifying Your USB Connector and Cable Types | A Full Guide

InterChip USB is a chip-to-chip variant that eliminates the conventional transceivers found in normal USB. The HSIC physical layer uses about 50% less power and 75% less board area compared to USB2.0. [102] It is an alternative standard to SPI and I2C. 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 connector mounted on the host or device is called the receptacle, and the connector attached to the cable is called the plug. [1] The official USB specification documents also periodically define the term male to represent the plug, and female to represent the receptacle, though these uses are inconsistent with established definitions of connector gender. [2] The USB 3.0 specification introduced an A-to-A cross-over cable without power for connecting two PCs. These are not meant for data transfer but are aimed at diagnostic uses.USB4 products may optionally offer interoperability with the HDMI, MHL, and VirtualLink Alternate Modes. Battery Charging v1.2 Spec and Adopters Agreement" (Zip). USB Implementers Forum. March 15, 2012. Archived from the original on October 6, 2014 . Retrieved May 13, 2021. As of USB Power Delivery specification revision2.0, version1.2, the six fixed power profiles for power sources have been deprecated. [67] USB PD Power Rules replace power profiles, defining four normative voltage levels at 5V, 9V, 15V, and 20V. Instead of six fixed profiles, power supplies may support any maximum source output power from 0.5W to 100W. What Is the USB 3.0 Cable Difference". Hantat. May 18, 2009. Archived from the original on December 11, 2011 . Retrieved December 12, 2011. Proprietary Cables vs Standard USB". anythingbutipod.com. 30 April 2008. Archived from the original on 13 November 2013 . Retrieved 29 October 2013.

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The charging device identifies a charging port by non-data signaling on the D+ and D− terminals. A dedicated charging port places a resistance not exceeding 200Ω across the D+ and D− terminals. [50] :§ 1.4.7; table 5-3 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 2017The three sizes of USB connectors are the default, or standard, format intended for desktop or portable equipment, the mini intended for mobile equipment, which was deprecated when it was replaced by the thinner micro size, all of which were deprecated in USB 3.2 in favor of Type-C. There are five speeds for USB data transfer: Low Speed, Full Speed, High Speed (from version 2.0 of the specification), SuperSpeed (from version 3.0), and SuperSpeed+ (from version 3.1). The modes have differing hardware and cabling requirements. USB devices have some choice of implemented modes, and USB version is not a reliable statement of implemented modes. Modes are identified by their names and icons, and the specification suggests that plugs and receptacles be color-coded (SuperSpeed is identified by blue). Universal Phone Charger Standard Approved" (Press release). ITU. October 22, 2009. Archived from the original on March 27, 2010 . Retrieved May 22, 2023.

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USB2.0 provides for a maximum cable length of 5 meters (16ft 5in) for devices running at high speed (480Mbit/s). [88]

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The OTG device with the A-plug inserted is called the A-device and is responsible for powering the USB interface when required, and by default assumes the role of host. The OTG device with the B-plug inserted is called the B-device and by default assumes the role of peripheral. An OTG device with no plug inserted defaults to acting as a B-device. If an application on the B-device requires the role of host, then the Host Negotiation Protocol (HNP) is used to temporarily transfer the host role to the B-device. Includes new USB4 Gen2×2 (64b/66b encoding) and Gen3×2 (128b/132b encoding) modes and introduces USB4 routing for tunneling of USB3.2, DisplayPort1.4a and PCI Express traffic and host-to-host transfers, based on the Thunderbolt3 protocol; requires USB4 Fabric. 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. 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. The Universal Serial Bus was developed to simplify and improve the interface between personal computers and peripheral devices, such as cell phones, computer accessories, and monitors, when compared with previously existing standard or ad hoc proprietary interfaces. [12]