Device Firmware Upgrade (DFU) is a vendor- and device-independent mechanism for upgrading the firmware of USB devices with improved versions provided by their manufacturers, offering (for example) a way to deploy firmware bug fixes. During the firmware upgrade operation, USB devices change their operating mode effectively becoming a PROM programmer. Any class of USB device can implement this capability by following the official DFU specifications. [58] [62] [63] PS/2 to USB Keyboard and Mouse Adapter". StarTech.com. Archived from the original on 12 November 2014 . Retrieved 21 May 2023.

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The PCI Express function of USB4 replicates the functionality of previous versions of the Thunderbolt specification. Media Agnostic USB v1.0a Spec and Adopters Agreement". usb.org. Archived from the original on 31 July 2021 . Retrieved 21 July 2021. Parikh, Bijal. "USB (Universal Serial Bus): An Overview". Engineers Garage. WTWH Media . Retrieved 7 May 2022. eSATA, like USB, supports hot plugging, although this might be limited by OS drivers and device firmware.

Standard USB hub ports can provide from the typical 500mA/2.5W of current, only 100mA from non-hub ports. USB3.0 and USB On-The-Go supply 1.8A/9.0W (for dedicated battery charging, 1.5A/7.5W full bandwidth or 900mA/4.5W high bandwidth), while FireWire can in theory supply up to 60watts of power, although 10 to 20watts is more typical. Starting with the USB 3.2 specification, USB-IF introduced a new naming scheme. [37] To help companies with branding of the different operation modes, USB-IF recommended branding the 5, 10, and 20Gbit/s operation modes as SuperSpeed USB 5Gbps, SuperSpeed USB 10Gbps, and SuperSpeed USB 20Gbps, respectively. [38].

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USB deserves more support". Business. Boston Globe Online. Simson. 31 December 1995. Archived from the original on 6 April 2012 . Retrieved 12 December 2011. Universal Serial Bus 3.0 Specification" (PDF). 12 November 2008. Archived (PDF) from the original on 6 October 2012 . Retrieved 29 December 2012– via www.gaw.ru. Battery Charging v1.2 Spec and Adopters Agreement" (ZIP). USB Implementers Forum. 7 March 2012. Archived from the original on 6 October 2014 . Retrieved 13 May 2021. OVERVIEW OF USB BATTERY CHARGING REVISION 1.2 AND THE IMPORTANT ROLE OF ADAPTER EMULATORS" (PDF). maxim integrated. 2014. p.3. Archived (PDF) from the original on 4 July 2021 . Retrieved 12 August 2021. rpms/dfu-util: USB Device Firmware Upgrade tool". fedoraproject.org. 14 May 2014. Archived from the original on 8 September 2014 . Retrieved 8 September 2014.

SuperSpeed+ (SS+) uses a new coding scheme with an increased signaling rate (Gen 2×1 mode) and/or the additional lane of USB-C (Gen 1×2 and Gen 2×2 modes).

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USB Audio 2.0 Drivers". Microsoft Hardware Dev Center. Archived from the original on 4 May 2018 . Retrieved 4 May 2018. ADC-2 refers to the USB Device Class Definition for Audio Devices, Release 2.0.USB-C (officially USB Type-C) is a standard that defines a new connector, and several new connection features. Among them it supports Alternate Mode, which allows transporting other protocols via the USB-C connector and cable. This is commonly used to support the DisplayPort or HDMI protocols, which allows connecting a display, such as a computer monitor or television set, via USB-C. USB 3.0 Technology" (PDF). HP. 2012. Archived from the original on 19 February 2015 . Retrieved 2 January 2014. The USB interface is hot-swappable (devices can be exchanged without shutting the host computer down). 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] High-speed (HS) uses the same wire pair, but with different electrical conventions. Lower signal voltages of −10 to 10 mV for low and 360 to 440 mV for logical high level, and termination of 45Ω to ground or 90Ω differential to match the data cable impedance.

USB Type-B cable and what is it for? here is what y What is a USB Type-B cable and what is it for? here is what y

USB 3.0 also introduced the USB Attached SCSI protocol (UASP), which provides generally faster transfer speeds than the BOT (Bulk-Only-Transfer) protocol.

Please note:

The USB standard also provides multiple benefits for hardware manufacturers and software developers, specifically in the relative ease of implementation: