Modes are identified by their names and icons, and the specification suggests that plugs and receptacles be colour-coded (SuperSpeed is identified by blue). Unlike other data buses (such as Ethernet), USB connections are directed; a host device has "downstream" facing ports that connect to the "upstream" ports of devices. The power configuration protocol uses a 24 MHz BFSK-coded transmission channel on the VBUS line. When D+ = 2.0 V and D− = 2.8 V, the device may pull up to 1 A of current. Note: Although they are not particularly common, USB A to USB A cables can sometimes been seen for use to connect USB devices with an A-style Female port to a PC or another USB device for data transfer between the two computer systems. [8], The thinner Micro-USB connectors were intended to replace the Mini connectors in devices manufactured since May 2007, including smartphones, personal digital assistants, and cameras.[17]. This enables them to be used in much thinner items of electronic equipment. > 3 A (60 W) operation requires an electronically marked cable rated at 5 A. These connectors include a lead-in feature in the connector housing for blind mating of receptacle to plug. Ethernet     The table below helps give an overview of the various types and formats. An OTG device with no plug inserted defaults to acting as a B-device. [citation needed] Examples include USB-powered keyboard lights, fans, mug coolers and heaters, battery chargers, miniature vacuum cleaners, and even miniature lava lamps. Serial data     Although the number of USB connector and cable types is increasing, there is normally not to much of an issue in finding the right cable for connecting the right items together. In this way, cables with smaller 5 pin USB 2.0 Micro-B plugs can be plugged into devices with 10 contact USB 3.0 Micro-B receptacles and achieve backward compatibility. The Open Mobile Terminal Platform, OMTP, endorsed Micro-USB as the standard connector for data and power on mobile device. Both Mini-A and Mini-B plugs are approximately 3 by 7 mm (0.12 by 0.28 in). [33] Some manufacturers such as Apple provide proprietary cables that permit their devices to physically connect to a USB standard port. The modes have differing hardware and cabling requirements. Developed at roughly the same time as the USB 3.1 specification, but distinct from it, the USB Type-C Specification 1.0 defines a new small reversible-plug connector for USB devices. The different A and B plugs prevent accidentally connecting two power sources. However, some of this directed topology is lost with the advent of multi-purpose USB connections (such as USB On-The-Go in smartphones, and USB-powered Wi-Fi routers), which require A-to-A, B-to-B, and sometimes Y/splitter cables. Author’s Note! [79] On laptops, charging devices from the USB port when it is not being powered from AC drains the laptop battery; most laptops have a facility to stop charging if their own battery charge level gets too low. Nowdays these connectors are obsolete and rarely used. This type of A to A cable is not intended to connect two computers together or to connect a USB hub between two computers, especially because both computers would provide 5V to the power lines on the cables and this could result in both power supplies being connected together, and other issues. Vcc. USB 3.x and USB 1.x Type-A plugs and receptacles are designed to interoperate. https://components101.com/connectors/micro-usb-pinout-datasheet Normally, when a computer is powered off the USB ports are powered down. By design, it is difficult to insert a USB plug into its receptacle incorrectly. Solid, durable Sturdy, with gold-plated connectors, this USB 2.0 cable is built for connecting and disconnecting over and over again without signal loss. In most cases, these items contain no digital circuitry, and thus are not standard-compliant USB devices. To achieve USB 3.0's SuperSpeed (and SuperSpeed+ for USB 3.1 Gen 2), 5 extra pins are added to the unused area of the original 4 pin USB 1.0 design, making USB 3.0 Type-A plugs and receptacles backward compatible to those of USB 1.0. 1. 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. Pinout of USB and layout of 4 pin USB A or USB B plug connector and 4 pin USB A / USB B / mini-USB jack connectorUSB (Universal Serial Bus) designed to connect peripherals such as mice, keyboards, scanners, digital cameras, printers, hard disks, and networking components to PC. The modes are configured using VDMs through the configuration channel. [29][30] Type-A and Type-B adaptors and cables are required for older devices to plug into USB-C hosts. The female connector or receptacle is the type found on the host, e.g. When a device detects it is plugged into a charger with a compatible faster-charging standard, the device pulls more current or the device tells the charger to increase the voltage or both to increase power (the details vary between standards).[100]. [86][87] This was the first standard to use the convention of shorting D+ and D− in the charger. In common practice, the A end is usually the standard format, and the B side varies over standard, mini, and micro. When a device doesn't recognize the faster-charging standard, generally the device and the charger fall back to the USB battery-charging standard of 5 V at 1.5 A (7.5 W). [19], Micro-USB was embraced as the "Universal Charging Solution" by the International Telecommunication Union (ITU) in October 2009.[20]. The Type-C plug connects to both hosts and devices, replacing various Type-B and Type-A connectors and cables with a standard meant to be future-proof, similar to Apple Lightning and … In some sources D+ and D− are erroneously swapped. phones from different manufacturers, etc.. 2.0 at multiple voltages. The pinouts for the 5 pin Micro-USB Type A, Type B receptacle connector are: 5 pin Micro-USB Type A, Type B receptacle connector is compatible with: Alcatel devices: Alcatel Tribe OT-980, Tribe OT-980; BlackBerry devices: BlackBerry 9310 Curve, 9500 / 9530 Storm, 9790 Bold, 9810 Torch 2; BlackBerry Curve 3G 9330 / 9300, Curve 8520 / Gemini USB has been selected as the standard charging format for many mobile phones, reducing the proliferation of proprietary chargers. Also, support is removed for charging port detection via resistive mechanisms. USB ports and connectors are often color-coded to distinguish their different functions and USB versions. USB 2.0 4-Pin Type A / Type B / USB mini Pinouts & Specifications. Charging ports on a host with both kinds will be labelled. [42][43][44][45] I.e., the maximum power may not be available. Cables with this connector are not backwards compatible with USB 2.0 or USB 1.1 devices; however USB 3.0 devices with this connection type can accept previous USB 2.0 and 1.1 cabling. [35], The USB 1.1 standard specifies that a standard cable can have a maximum length of 5 meters (16 ft 5 in) with devices operating at full speed (12 Mbit/s), and a maximum length of 3 meters (9 ft 10 in) with devices operating at low speed (1.5 Mbit/s).[36][37][38]. The USB B Type socket is an "upstream" connector that is only used on peripheral devices. Only downstream facing ports provide power; this topology was chosen to easily prevent electrical overloads and damaged equipment. Some USB ports and external hubs can, in practice, supply more power to USB devices than required by the specification but a standard-compliant device may not depend on this. Otherwise, connecting a device could cause problems with the host's internal power. USB type-c details. ", "7.3.2 Bus Timing/Electrical Characteristics", "Universal Serial Bus 2.0 Specification, Section 7.2.1.3 Low-power Bus-powered Functions", "Universal Serial Bus 2.0 Specification, Section 7.2.1.4 High-power Bus-powered Functions", "Roundup: 2.5-inch Hard Disk Drives with 500 GB, 640 GB and 750 GB Storage Capacities (page 17)", "I have the drive plugged in but I cannot find the drive in "My Computer", why? [60][61] The standard is designed to coexist with the previous USB Battery Charging specification.[62]. Shop USB 3.0 B-Type The USB Power Delivery specification revision 2.0 (USB PD Rev. Connecting them may cause irreparable damage to the computers and may even present a fire hazard. USB introduction     While the Type B plug is found on one end of the cable, Type A connector always remained on the other end to plug into the computer. The OTG device with the B-plug inserted is called the B-device and by default assumes the role of peripheral. WiFi     ", "Universal Serial Bus Micro-USB Cables and Connectors Specification", "Qualcomm Certified Nekteck Quick Charge 2.0 54W 4 Ports USB Rapid Turbo Car Charger", "Universal Serial Bus Revision 3.0 Specification, Sections 3.1.1.1 and 5.3.1.3", "USB: a neat package with a few loose ends", "What is the Difference between USB Type A and USB Type B Plug/Connector? A bus-powered hub is a high-power device providing low-power ports. The USB standard included power supply to peripheral devices; modern versions of the standard extend the power delivery limits for battery charging and devices requiring up to 100 watts. Also known as USB standard A connector, the USB A connector is primarily be used on … PoweredUSB is a proprietary extension that adds four additional pins supplying up to 6 A at 5 V, 12 V, or 24 V. It is commonly used in point of sale systems to power peripherals such as barcode readers, credit card terminals, and printers. Two versions are available, namely the USB mini-A and the USB Mini-B. The USB Micro connector has been adopted by many organisations as a standard. Full-featured USB-C 3.1 cables are electronically marked cables that contain a full set of wires and a chip with an ID function based on the configuration data channel and vendor-defined messages (VDMs) from the USB Power Delivery 2.0 specification. Bus power is also provided to the accessory port from the charging port transparently. [66] USB PD Power Rules replace power profiles, defining four normative voltage levels at 5 V, 9 V, 15 V, and 20 V. Instead of six fixed profiles, power supplies may support any maximum source output power from 0.5 W to 100 W. The USB Power Delivery specification revision 3.0 defines a programmable power supply (PPS) protocol that allows granular control over VBUS power in 20 mV steps to facilitate constant current or constant voltage charging. [76], Prior to Power Delivery, mobile phone vendors used custom protocols to exceed the 7.5 W cap on USB-BCS. Australian and New Zealand power socket with USB charger socket. OTG devices attached either to a peripheral-only B-device or a standard/embedded host have their role fixed by the cable, since in these scenarios it is only possible to attach the cable one way. Compliant devices must either fit within the size restrictions or support a compliant extension cable that does. Similar to the USB A connector, the B type connector uses the friction to retain the connector in place. USB devices have some choice of implemented modes, and USB version is not a reliable statement of implemented modes. A small device that provides voltage and current readouts for devices charged over USB. [26][28], The 24-pin double-sided connector provides four power-ground pairs, two differential pairs for USB 2.0 data bus (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, VCONN +5 V power for active cables, and a configuration pin for cable orientation detection and dedicated biphase mark code (BMC) configuration data channel. Devices can request higher currents and supply voltages from compliant hosts – up to 2 A at 5 V (for a power consumption of up to 10 W), and optionally up to 3 A or 5 A at either 12 V (36 W or 60 W) or 20 V (60 W or 100 W). The Mini-A and Mini-B plugs are approximately 3 by 7 mm. This had slightly different pinout arrangement. To achieve this, USB remote devices have what is termed an upstream connection to a host. Such devices can use an external power supply, which is allowed by the standard, or use a dual-input USB cable, one input of which is for power and data transfer, the other solely for power, which makes the device a non-standard USB device. [99], A variety of (non-USB) standards support charging devices faster than the USB battery-charging standard (USB-#BCS). Not connected, although it can sometimes be ground or used as a presence indicator. Type-B connectors are at the other end of a typical USB cable that plugs into a peripheral device, such as a smartphone, a printer or a hard drive. USB Type-C is a specification for a USB connector system that is gaining popularity across smartphones and mobile devices and is capable of both power delivery and data transmission. [47] Such a cable is non-standard, with the USB compliance specification stating that "use of a 'Y' cable (a cable with two A-plugs) is prohibited on any USB peripheral", meaning that "if a USB peripheral requires more power than allowed by the USB specification to which it is designed, then it must be self-powered. [citation needed] On Dell, HP and Toshiba laptops, the port is marked with the standard USB symbol with an added lightning bolt or battery icon on the right side. [49], The charging device identifies a charging port by non-data signaling on the D+ and D− terminals. Data transfer speeds have risen, and the requirement for smaller connectors has increased. ", "Qualcomm Announces Quick Charge 4: Supports USB Type-C Power Delivery", "How to configure the system to charge devices over USB port when it is off - idea/Lenovo laptops - NL", "China to enforce universal cell phone charger", "YD/T 1591-2006, Technical Requirements and Test Method of Charger and Interface for Mobile Telecommunication Terminal Equipment", "How to conform to China's new mobile phone interface standards", "Pros seem to outdo cons in new phone charger standard", "Broad Manufacturer Agreement Gives Universal Phone Cable Green Light", "Agreement on Mobile phone Standard Charger", "Common Charging and Local Data Connectivity", "Universal Charging Solution ~ GSM World", "Meeting the challenge of the universal charge standard in mobile phones", "The Wireless Association Announces One Universal Charger Solution to Celebrate Earth Day", "Europe gets universal cellphone charger in 2010", "One size-fits-all mobile phone charger: IEC publishes first globally relevant standard", "Watt to Know About iPhone & iPad Power Adapters | Analysis", "Nook Color charger uses special Micro-USB connector", https://en.wikipedia.org/w/index.php?title=USB_hardware&oldid=1000593201, Articles lacking reliable references from September 2015, All Wikipedia articles written in American English, Pages using multiple image with auto scaled images, Articles with unsourced statements from October 2011, Articles with unsourced statements from April 2017, Articles with unsourced statements from March 2018, Wikipedia articles needing factual verification from October 2020, Articles containing potentially dated statements from April 2016, All articles containing potentially dated statements, Articles with unsourced statements from September 2017, Articles containing potentially dated statements from June 2007, Articles with unsourced statements from March 2013, Creative Commons Attribution-ShareAlike License. (2) 8-pin Mini-B plug (this strongly resembles the 8-pin Micro-B plug which often has only 5 pin positions occupied), The type-A plug. Do not be tempted to connect computers in this way. Similar to the USB A connector, the B type connector uses the friction to retain the connector in place. [39] The USB 2.0 specification requires that cable delay be less than 5.2 ns/m (1.6 ns/ft), (192000 km/s) - which is close to the maximum achievable transmission speed for standard copper wire). ", "USB Type-C: One Cable to Connect Them All", "Technical Introduction of the New USB Type-C Connector", "DisplayPort Alternate Mode for USB Type-C Announced - Video, Power, & Data All Over Type-C", "On-The-Go and Embedded Host Supplement to the USB Revision 3.0 Specification", "Review: Logitech's Ultrathin mini keyboard cover makes the wrong tradeoffs", "What is the Maximum Length of a USB Cable? Type B USB connector pinout The USB B type connector is almost square in shape, but it has slightly bevel on the corners on the top ends of the connector. There is some colour coding on these connectors in terms of their capabilities. The EU's common EPS specification (EN 62684:2010) references the USB Battery Charging Specification and is similar to the GSMA/OMTP and Chinese charging solutions. A second connector type known as the Type B was often used for smaller peripherals. [22][23] Apple, one of the original MoU signers, makes Micro-USB adapters available – as permitted in the Common EPS MoU – for its iPhones equipped with Apple's proprietary 30-pin dock connector or (later) Lightning connector. USB Type B connectors and ports have a square shape with a square protrusion on top and are found on larger computer peripheral devices such as printers and scanners. The accessory port acts as any other port. Mouser offers inventory, pricing, & datasheets for USB Type B Connectors USB Connectors. USB devices are also required to automatically enter ultra low-power suspend mode when the USB host is suspended. To enable Type-AB receptacles to distinguish which end of a cable is plugged in, plugs have an "ID" pin in addition to the four contacts in standard-size USB connectors. Accessory charging adapters (ACA) are devices that provide portable charging power to an On-The-Go connection between host and peripheral. What is the Cloud     [5] To accomplish this, a locking device was added and the leaf-spring was moved from the jack to the plug, so that the most-stressed part is on the cable side of the connection. Some devices that use Type-A connectors are mouse, keyboard, or network adapter, and even thumb drives (USB flash drive). Types A and B have 4 pins within the connector, Mini and Micro A and B connectors generally have five pins. The USB specification also defines limits to the size of a connecting device in the area around its plug, so that adjacent ports are not blocked. The USB B type connector is almost square in shape, but it has slightly bevel on the corners on the top ends of the connector. Charging ports, however, can immediately supply between 0.5 and 1.5 A of current. (In the past, before the development of Micro-USB, On-The-Go devices used Mini-AB receptacles). computer, etc, whereas the male will be seen on items like flash memories, mouse connector, keyboard connector, etc.. Revision 1.2 of the specification was released in 2010. The description section of the table above is self-explanatory. This article has been imported from my previous website. Micro-USB connectors, which were announced by the USB-IF on 4 January 2007,[15][16] have a similar width to Mini-USB, but approximately half the thickness, enabling their integration into thinner portable devices. USB connector types multiplied as the specification progressed. 4G LTE     Wire colors. Devices' configuration and low-power functions must operate down to 4.40 V at the hub port by USB 2.0 and that devices' configuration, low-power, and high-power functions must operate down to 4.00 V at the device port by USB 3.0. When D+ = D− = 2.0 V, the device may pull up to 900 mA. The initial versions of the USB standard specified connectors that were easy to use and that would have acceptable life spans; revisions of the standard added smaller connectors useful for compact portable devices. The USB b superspeed pinout is the combination of USB b and 5 auxiliary pins which are predominantly used in high-speed External Hard Drives. The different connectors also ensure that connections are only made in the right direction. - The cable itself is pretty weak so we need to make it stronger. 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 26 ns. USB is a likely solution any time you want to use a computer to communicate with devices outside the computer. USB cables come with five different basic types of USB connector: types A, B, micro B, mini B, and C.The mini connector is common on older non-Apple mobile phones and other portables. This article provides information about the physical aspects of Universal Serial Bus, USB: connectors, cabling, and power. Mini-USB connectors were introduced together with USB 2.0 in April 2000, for use with smaller devices such as digital cameras, smartphones, and tablet computers. The USB Type A plug is the male version of the connector. NFC- Near Field Communication     USB 2.0 provides for a maximum cable length of 5 meters (16 ft 5 in) for devices running at high speed (480 Mbit/s). The Universal Serial Bus Micro-USB Cables and Connectors Specification details the mechanical characteristics of Micro-A plugs, Micro-AB receptacles (which accept both Micro-A and Micro-B plugs), Double-Sided Micro USB, and Micro-B plugs and receptacles,[18] along with a Standard-A receptacle to a Micro-A plug adapter. The connector pinouts or pin connections for the mini and micro USB connectors are given in the table below. The primary reason for this limit is the maximum allowed round-trip delay of about 1.5 μs. It draws 1 unit load for the hub controller and 1 unit load for each of at most 4 ports. Like all connectors, those used for USB have male and female versions to ensure that devices are mated in the correct direction. [6][4], In standard USB, the electrical contacts in a USB connector are protected by an adjacent plastic tongue, and the entire connecting assembly is usually protected by an enclosing metal shell.[4]. The USB 3.0 standard does not directly specify a maximum cable length, requiring only that all cables meet an electrical specification: for copper cabling with AWG 26 wires the maximum practical length is 3 meters (9 ft 10 in).[40]. The female connector mounted on the host or device is called the receptacle, and the male connector attached to the cable is called the plug. Based on physical design of the plugs and ports the three different types of USB cable are: The most popular type of USB standard is Type A, which you can see at one end (the end that goes inside the slot of the host) of almost every USB cable nowadays. Since these currents are larger than in the original standard, the extra voltage drop in the cable reduces noise margins, causing problems with High Speed signaling. This ID pin is connected to GND in Type-A plugs, and left unconnected in Type-B plugs. This USB power meter additionally provides a charge readout (in mAh) and data logging. 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