Micro USB is a portable version of USB 2.0 standard, smaller than the mobile phone using the Mini USB interface, is the next generation USB Mini .Micro -USB supports OTG, like Mini - USB, also 5 pin.The definition of Micro series including standard equipment using Micro - B series slot. OTG (On-the-go) devices use Micro - AB slots with Micro-A and Micro-B plugs and cables. Micro series use stainless steel shells, which greatly increases longevity.
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