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An enhanced mini-USB (EMU) [1] connector is a type of hybrid electrical connector which carries Universal Serial Bus data and power as well as other connections such as bidirectional audio. It was invented for and is mainly used on mobile phones. Motorola, HTC Corporation, and other mobile phone manufacturers use EMU connectors. [2] There is more than one standard for EMU connectors, which are incompatible between manufacturers, but all are physically and electrically compatible with standard mini-USB connectors. The EMU connector has five pins for USB on one side. While regular USB connectors are empty on the other side, EMU has more pins intended for headsets. In HTC's version, two pins are for the microphone, three are for stereo sound, and one is for the push-to-talk switch.
In the CEA-936-A standard, there are no extra pins — the USB data pins are also used for RS-232 transmit and receive, stereo audio left and right, or for microphone and speaker/earpiece. Devices select which function the pins perform depending on user settings or on the context or mode in which the device is being operated. Two different functions cannot be used at once.
Using the connector may require a breakout cable or special headset. Most often, the user must buy a special adapter or pigtail to make the correct connections to a 2.5 mm TRS connector for a monophonic headset or 3.5 mm for stereo headphones. True breakout cables which provide all connections are unavailable, thus a phone cannot be charged at the same time as a headset or headphones are inserted, even for EMUs with extra pins.
Some mobile phone companies have used the extra pin "X" to enforce the use of their own battery chargers. Verizon Wireless is the first company to require first-party battery chargers, having colluded with Motorola[ citation needed ] to put an arbitrary 1.4 volts on pin X. This voltage violates the USB-IF standards, as pin X should either be tied to ground or not connected at all. Without this connection, the phone will refuse to charge, displaying "unauthorized charger" despite receiving the proper current. The phone will charge while connected to a personal computer only if the PC is running a special device driver.
Extra pins in hybrid mini-USB connectors are used as non-standard compliant way to provide USB 3.0 SuperSpeed connectivity as alternative to standard SuperSpeed micro-B and USB-C connectors. [3]
A phone connector, also known as phone jack, audio jack, headphone jack or jack plug, is a family of electrical connectors typically used for analog audio signals. A plug, the "male" connector, is inserted into the jack, the "female" connector.
The XLR connector is a type of electrical connector primarily used in professional audio, video, and stage lighting equipment. XLR connectors are cylindrical in design, with three to seven connector pins, and are often employed for analog balanced audio interconnections, AES3 digital audio, portable intercom, DMX512 lighting control, and for low-voltage power supply. XLR connectors are included to the international standard for dimensions, IEC 61076-2-103. The XLR connector is superficially similar to the smaller DIN connector, with which it is physically incompatible.
A DC connector is an electrical connector for supplying direct current (DC) power.
USB On-The-Go is a specification first used in late 2001 that allows USB devices, such as tablets or smartphones, to also act as a host, allowing other USB devices, such as USB flash drives, digital cameras, mouse or keyboards, to be attached to them. Use of USB OTG allows those devices to switch back and forth between the roles of host and device. A mobile phone may read from removable media as the host device, but present itself as a USB Mass Storage Device when connected to a host computer.
The Motorola ROKR, the first version of which was informally known as the iTunes phone, was a series of mobile phones from Motorola, part of a 4LTR line developed before the spin out of Motorola Mobility. ROKR models were released starting in September 2005 and ending in 2009. They were notable for incorporating support of media player features.
The Pop-Port interface was a proprietary plug-in port for accessories and data synchronisation, available with many Nokia mobile phones. The port consists of one metal pin on either end, and a plastic tab containing thirteen contacts. Pop-Port-like interfaces first appeared in Nokia phones since circa 1996, but the Pop-Port was standardised as a single interface in 2002.
The Nokia 6120 classic is a mid-range smartphone from Nokia that was announced on 17 April 2007. It runs on Symbian v9.2 with a S60 3rd Edition FP1 user interface.
Headsets connect over a telephone or to a computer, allowing the user to speak and listen while keeping both hands free. They are commonly used in customer service and technical support centers, where employees can converse with customers while typing information into a computer. Also common among computer gamers are headsets, which will let them talk with each other and hear others, as well as use their keyboards and mice to play the game.
A dock connector is a connector used to attach a mobile electronic device simultaneously to multiple external resources. The dock connector will typically carry a variety of signals and power, through a single connector, to simplify the process of docking the mobile device. A dock connector may be embedded in a mechanical fixture used to support or align the mobile device or may be at the end of a cable.
The HTC Touch Pro2 is a slate smartphone, part of the Touch series of Internet-enabled, Windows Mobile, Pocket PC smartphones designed and marketed by HTC Corporation of Taiwan. It is an enhanced version of the HTC Touch Pro with a left-side slide-out QWERTY keyboard, with tilting screen. The Touch Pro2 smartphone's functions include those of a camera phone and a portable media player in addition to text messaging and multimedia messaging. It also offers Internet services including e-mail, instant messaging, web browsing, and local Wi-Fi connectivity. Visual voicemail is not a standard feature for the Touch Pro2, unlike its predecessor the Touch Pro. The Verizon Wireless version does include a visual voicemail application, however. All versions feature TouchFLO 3D — a new enhanced version of the TouchFLO interface, unique only to the latest Touch series. The latest update renamed TouchFLO 3D to SenseUI, to match HTC's Android offering. The Touch Pro2 — along with its sister model, the Touch Diamond2 — were unveiled on February 16, 2009 in Barcelona, Spain at the Mobile World Congress 2009. Specific enhancements over the original Touch Pro include:
HTC Magic is an Android smartphone designed and manufactured by HTC. It is HTC's second Android phone after HTC Dream, HTC's first touch-only flagship Android device and the second Android phone commercially released, as well as the first Android phone without a keyboard.
Universal charger or common charger refers to various projects to standardize the connectors of power supplies, particularly for battery-powered devices.
The FastPort was a proprietary polyconnection interface used on all Sony Ericsson cellphones between 2005 and 2010. Designed in response to Nokia's proprietary Pop-Port, FastPort provided data transfer, charging, headset and speaker connections through a common interface. It was discontinued in 2010 and replaced with a micro-USB for charging and data, and a TRRS connection for audio (headphones).
A Y-cable, Y cable, or splitter cable is a cable with three ends: one common end and two other ends. The Y-cable can resemble the Latin letter "Y".
Lightning is a proprietary computer bus and power connector created and designed by Apple Inc. and introduced on September 12, 2012, to replace its predecessor, the 30-pin dock connector. The Lightning connector is used to connect Apple mobile devices like iPhones, iPads, and iPods to host computers, external monitors, cameras, USB battery chargers, and other peripherals. Using 8 pins instead of 30, Lightning is much smaller than its predecessor, which was integrated with devices like the iPhone 4 and the iPad 2. The Lightning plug is symmetrical, so it can be inserted into a Lightning receptacle in either orientation. The plug is indented on each side to match up with corresponding points inside the receptacle to retain the connection.
USB-C is a 24-pin USB connector system with a rotationally symmetrical connector. The designation C refers only to the connector's physical configuration or form factor and should not be confused with the connector's specific capabilities, which are designated by its transfer specifications. A notable feature of the USB-C connector is its rotational symmetry; a plug may be inserted into a receptacle in either orientation.
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. Higher-speed development of the USB standard gave rise to another family of connectors to permit additional data paths. All versions of USB specify cable properties; version 3.x cables include additional data paths. 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. USB has been selected as the standard charging format for many mobile phones, reducing the proliferation of proprietary chargers.
A microphone blocker is a phone microphone connector used to trick feature phones that have a physical microphone switch to disconnect the microphone. Microphone blockers won't operate on smartphones or laptops because the microphone is controlled with software rather than a physical switch.