What are the two interfaces of the MICRO USB 3.0 connector?

The kind of mobile hard disk is indeed MICRO USB 3.0 interface (also said miniUSB3.0) USB3.0 compared to 2.0 to add 5 contacts. Because USB3.0 has backward compatibility, can be compatible with 2.0 cable or host, in general A type USB interface can also ensure that the shape of the 2.0 interface does not change to add contacts. However, USB2.0 in the B-type port and microUSB interface size, there is no room to add more contacts, so it is used in the original interface to add structure around the method. In this way, the 3.0 cable can be inserted into all the interfaces, 2.0 cable is only inserted into the corresponding shape of the position, it can be used.
USB3.0 B-type port shape close to the number 8, similar to a small square stacked into two, between the larger square just usb2.0 B-type port shape, 2.0 cable can be directly inserted, can be used, but only 2.0 speed is just microUSB3.0 interface shape is flat and wide, close to the side of the notch, the notch side of the notch! Compatible with the use of microUSB2.0 cable (micro USB3.0 has two interfaces, micro-A, micro-B). This also completes the USB3.0 system to ensure the perfect downward, although the width increases, but the thickness of miniUSB3.0 is still Z small USB3.0, in the ultra-thin mobile hard disk, there is still a meaning of existence.

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