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What is USB

Time: 2012-12-10 09:51:38    Source: Original

USB V0.7 version from November 11, 1994, USB version has gone through years of development, up to now, has been the development of version 3.0, a computer standard expansion interface. Motherboard with USB1.1 and USB2.0, good compatibility between USB version. With a 4-pin USB (USB3.0 standard 9-pin) plug as a standard plug, all peripherals can be connected together in the form of a daisy-chain up to 127 can be connected to an external device, and no loss of bandwidth. USB needed support to the work of the three aspects of the host hardware, operating systems and peripherals. Current motherboards generally support the USB function control chipset, install the USB interface socket on the motherboard, and in addition to the backplane receptacle on the motherboard
  USB interface
Reserved USB pin connection can be received by the front of the chassis as a front USB interface for ease of use (Note to carefully read the motherboard manual and press Figure connection wiring, so do not take the wrong equipment damage) . USB interface can also be achieved through a special USB connected machine line dual interconnect interface, and can be extended through the Hub. USB transmission speed is 12Mbps (USB1.1, USB2.0 is 480Mbps USB3.0 5 Gbps), easy to use, hot swappable, flexible connection, independent power supply, etc., you can connect a mouse, keyboard, printer scanners, cameras, flash drives, MP3 players, mobile phones, digital cameras, mobile hard disk, external optical floppy, USB network card, ADSL Modem, Cable Modem, almost all of the external device.
The USB interface can be used to connect up to 127 peripherals, such as mice, modems, and keyboards. USB since its launch in 1996, has been a successful alternative to serial and parallel ports, and become one of today's personal computer and a large number of intelligent devices must be equipped with an interface.