Joined in 2023 
82 
63 About this deal
USB Type-B: This connector is mostly used for connecting printers, scanners, and other peripheral devices to computers. It has a square shape with bevelled corners.
Meeting the challenge of the universal charge standard in mobile phones". Planet Analog. Archived from the original on September 9, 2012 . Retrieved June 22, 2010. The Wireless Association Announces One Universal Charger Solution to Celebrate Earth Day" (Press release). CTIA. 22 April 2009. Archived from the original on 14 December 2010 . Retrieved 22 June 2010. I have the drive plugged in but I cannot find the drive in "My Computer", why?". hitachigst.com. Archived from the original on 15 February 2011 . Retrieved 30 March 2012. In May 2021, the USB PD promoter group launched revision 3.1 of the specification. [58] Revision 3.1 adds Extended Power Range (EPR) mode which allows higher voltages of 28, 36, and 48 V, providing up to 240 W of power (48 V at 5 A), and the "Adjustable Voltage Supply" (AVS) protocol which allows specifying the voltage from a range of 15 to 48 V in 100 mV steps. [71] [72] Higher voltages require electronically marked EPR cables that support 5 A operation and incorporate mechanical improvements required by the USB Type-C standard rev. 2.1; existing power modes are retroactively renamed Standard Power Range (SPR). In October 2021 Apple introduced a 140 W (28 V 5 A) GaN USB PD charger with new Macbooks. [73]
The functionality of a USB device is defined by a class code sent to a USB host. This allows the host to load software modules for the device and to support new devices from different manufacturers. ID Pin Resistance on Mini B-plugs and Micro B-plugs Increased to 1 Mohm". USB IF Compliance Updates. December 2009. Archived from the original on 20 July 2011 . Retrieved 1 March 2010. 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. Contrary to other functions – which use the multiplexing of high-speed links – USB 2.0 over USB-C utilizes its own differential pair of wires. 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]
Devices that draw no more than one unit are said to be low-power devices. All devices must act as low-power devices when starting out as unconfigured. For USB devices up to USB2.0 a unit load is 100mA (or 500mW), while USB3.0 defines a unit load as 150mA (750mW). Full-Featured USB-C Fabrics can support low-power devices with a unit load of 250mA (or 1250mW). 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 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.What is the Difference between USB Type A and USB Type B Plug/Connector?". Archived from the original on February 7, 2017. Devices that draw more than one unit are high-power devices (such as typical 2.5-inch 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] a b c d e "Universal Serial Bus Cables and Connectors Class Document Revision 2.0" (PDF). USB.org. August 2007. Archived from the original (PDF) on June 11, 2014 . Retrieved April 28, 2019.
Battery Charging Specification 1.1 Added support for dedicated chargers, host chargers behavior for devices with dead batteries Scanners: USB Type B connectors are also used in scanners to connect them to computers for data transfer and control. 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. USB2.0 provides for a maximum cable length of 5 meters (16ft 5in) for devices running at high speed (480Mbit/s). The primary reason for this limit is the maximum allowed round-trip delay of about 1.5μs. If USB host commands are unanswered by the USB device within the allowed time, the host considers the command lost. When adding USB device response time, delays from the maximum number of hubs added to the delays from connecting cables, the maximum acceptable delay per cable amounts to 26ns. [37] The USB2.0 specification requires that cable delay be less than 5.2ns/m ( 1.6ns/ft, 192 000 km/s), which is close to the maximum achievable transmission speed for standard copper wire.
USB Type B Applications
USB2.0 was released in April 2000, adding a higher maximum signaling rate of 480Mbit/s (maximum theoretical data throughput 53MByte/s [25]) named High Speed or High Bandwidth, in addition to the USB1. x Full Speed signaling rate of 12Mbit/s (maximum theoretical data throughput 1.2MByte/s [26]).
Great Deal 
New Comment