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USB Implementers Forum, Inc. (USB-IF) is a nonprofit organization created to promote and maintain USB (Universal Serial Bus), a set of specifications and transmission procedures for a type of cable connection that has since become used widely for electronic equipment.
Thus, USB cables have different ends: A and B, with different physical connectors for each. Each format has a plug and receptacle defined for each of the A and B ends. A USB cable, by definition, has a plug on each end—one A (or C) and one B (or C)—and the corresponding receptacle is usually on a computer or electronic device.
Few USB devices made it to the market until USB 1.1 was released in August 1998. USB 1.1 was the earliest revision that was widely adopted and led to what Microsoft designated the "Legacy-free PC". [26] [27] [28] Neither USB 1.0 nor 1.1 specified a design for any connector smaller than the standard type A or type B.
OtterBox USB-C PD UK Wall Charger 20W and Reinforced USB-C to Lightning Cable, MFi Certified Charging speed: 20W USB-C | Ports: 1x USB-C | Dimensions: 4.29 x 2.9 x 4.98cm | Weight: 85.2g
Full-Featured USB 3.2 and 2.0 Type-C cable wiring Plug 1, USB Type-C USB Type-C cable Plug 2, USB Type-C Pin Name Wire color No. Name Description 2.0 [a] Pin Name Shell: Shield Braid Braid Shield Cable external braid Shell: Shield A1, B12, B1, A12 GND Tin-plated 1 GND_PWRrt1 Ground for power return A1, B12, B1, A12 GND 16 GND_PWRrt2 A4, B9, B4 ...
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Apple Inc.'s MFi Program, referring to "Made for iPhone/iPod/iPad", is a licensing program for developers of hardware and software peripherals that work with Apple's iPod, iPad and iPhone. The name is a shortened version of the long-form Made for iPod , the original program that ultimately became MFi.
The idle line state is when the device is connected to the host with a pull-up on either D+ (for full speed USB 1.x) or D− (for low speed USB 1.x), with transmitter output on both host and device is set to high impedance (hi-Z) (disconnected output). A USB device pulls one of the data lines high with a 1.5 kΩ resistor.
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