This is common for external hard and optical disc drives, and generally for devices with motors or lamps. 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. Male and female connectors can be found for all types of Universal Serial Bus jacks - Micro USB-B male connector, USB-A female connector, and so on. It supports 40Gbit/s throughput, is compatible with Thunderbolt 3, and backward compatible with USB3. USB Type-A ports/receptacles are found on almost any modern computer-like device that can act as a USB host, including, of course, computers of all kinds including desktops, laptops, netbooks, and many tablets.

However, FireWire's speed advantages rely on low-level techniques such as direct memory access (DMA), which in turn have created opportunities for security exploits such as the DMA attack. Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. Power over Ethernet (PoE) standards specify more elaborate power negotiation schemes than powered USB.The USB Device Class Definition for MIDI Devices transmits Music Instrument Digital Interface ( MIDI) music data over USB. backward-compatibility resulting in 9 wires (with 9 or 10 pins at connector interfaces; ID-pin is not wired) in total. introduced Type-A SuperSpeed plugs and receptacles as well as micro-sized Type-B SuperSpeed plugs and receptacles.

In Europe, micro-USB became the defined common external power supply (EPS) for use with smartphones sold in the EU, [19] and 14 of the world's largest mobile phone manufacturers signed the EU's common EPS Memorandum of Understanding (MoU). Only downstream facing ports provide power; this topology was chosen to easily prevent electrical overloads and damaged equipment. A typical example of somewhere you will often see a Type-B USB port is on an external hard drive dock (i. The USB interface is hot-swappable (devices can be exchanged without shutting the host computer down).Two decades of "plug and play": How USB became the most successful interface in the history of computing". In June 2009, the European Commission organized a voluntary Memorandum of Understanding (MoU) to adopt micro-USB as a common standard for charging smartphones marketed in the European Union. This is, by definition, a device with two logical B ports, each with a captive cable, not a cable with two A ends. USB-PD Devices can request higher currents and supply voltages from compliant hosts—up to 2A at 5V (for a power consumption of up to 10W), and optionally up to 3A or 5A at either 12V (36W or 60W) or 20V (60W or 100W). Devices that use MA-USB will be branded as 'Powered by MA-USB', provided the product qualifies its certification program.

Type-C USB connectors can be used with adapters that allow the connection of various other USB types, and they are capable of transferring power and data to/from all previous generations of USB devices. In most modern technology devices, there will be some form of USB connection available to connect equipment. 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.Promoter Group to the USB Implementers Forum (USB-IF) and announced on 17 November 2008 at the SuperSpeed USB Developers Conference. The GSM Association (GSMA) followed suit on February 17, 2009, [88] [89] [90] [91] and on April 22, 2009, this was further endorsed by the CTIA – The Wireless Association, [92] with the International Telecommunication Union (ITU) announcing on October 22, 2009, that it had also embraced the Universal Charging Solution as its "energy-efficient one-charger-fits-all new mobile phone solution," and added: "Based on the Micro-USB interface, UCS chargers will also include a 4-star or higher efficiency rating—up to three times more energy-efficient than an unrated charger. This was primarily due to deficiencies of clocking implementation rather than inherent shortcomings of the approach.