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USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector" (PDF). 20 October 2000. Archived (PDF) from the original on 12 April 2015 . Retrieved 29 December 2014– via www.usb.org. eSATA, like USB, supports hot plugging, although this might be limited by OS drivers and device firmware. Read on to discover how all that changes with USB-C. Or find out how ViewSonic USB-C monitors can bring you a whole host of benefits. Similarly, MP3 players, digital cameras and portable game consoles can be charged by a computer via a mini USB cable and share data in either direction.
USB, which stands for Universal Serial Bus, refers to the system that transfers data between computers or between components within a computer, such as a keyboard or a mouse. Consisting of a type of cable and connector, many electronic devices will have a USB connection available, including in vehicles and modern workstation power systems. a b c "Universal Serial Bus 3.2 Specification" (ZIP) (Revision 1.1ed.). USB Implementers Forum. June 2022 . Retrieved 27 April 2023. Since USB 3.1, which coincides with the introduction of USB-C, improvements have included the directionality of the cable. Previous iterations required specific ends for host and peripheral, whereas USB 3.1 introduced bi-directionality to match the bi-directional connector form of USB-C. a b "Universal Serial Bus 2.0 Specification" (ZIP) (Revision 2.0ed.). USB Implementers Forum. 27 April 2000 . Retrieved 27 April 2023.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. USB1.0, 1.1, and 2.0 use a "speak-when-spoken-to" protocol, meaning that each peripheral communicates with the host when the host specifically requests communication. USB3.0 allows for device-initiated communications towards the host. A FireWire device can communicate with any other node at any time, subject to network conditions.
Thunderbolt 2 uses link aggregation to combine the two 10Gbit/s channels into one bidirectional 20Gbit/s channel. [116] The USB1.1 standard specifies that a standard cable can have a maximum length of 5 meters (16ft 5in) with devices operating at full speed (12Mbit/s), and a maximum length of 3 meters (9ft 10in) with devices operating at low speed (1.5Mbit/s). [86] [87] [88] USB takes full advantage of the additional processing power that can be economically put into peripheral devices so that they can manage themselves. As such, USB devices often do not have user-adjustable interface settings. The USB interface is generalized with no signal lines dedicated to only one function of one device. [12]Shuler, Kurt (31 March 2011). "Interchip Connectivity: HSIC, UniPro, HSI, C2C, LLI... oh my!". Arteris IP. Archived from the original on 19 June 2011 . Retrieved 24 June 2011. Though most personal computers since early 2005 can boot from USB mass storage devices, USB is not intended as a primary bus for a computer's internal storage. However, USB has the advantage of allowing hot-swapping, making it useful for mobile peripherals, including drives of various kinds. Joel Johnson (29 May 2019). "The unlikely origins of USB, the port that changed everything". Fast Company. When shopping for USB cables, it’s particularly important to look for the maximum rated speed. You can find many cables that use USB-C on both ends and offer 60 watts of charging, but can only move data at USB 2.0 speeds (480 Mbps). The History Of USB USB Logo Usage Guidelines" (PDF). USB Implementers Forum. Archived (PDF) from the original on 9 January 2022 . Retrieved 13 February 2022.
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