usb2.0 and 3.0 What is the difference
2016-03-17 10:26:40
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1. USB 2.0: maximum data transfer rate of 480 Mbit / s
2. USB 3.0 support full-duplex, 5 new contacts, two for the data output, two data inputs, to send the list of sections for data contract, the new contact will be side by side in the current four contacts rear. USB 3.0 standard is provisional supply 900mA, will support the optical fiber transmission, using optical fiber once the speed is more likely to reach 25Gbps.
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USB 3.0 is designed to work with USB 2.0 and USB 1.1 version, and the use of three multi-layer power management technology, can provide different solutions for different power management devices.
3.USB3.0 usually blue, USB2.0 usually black, generally speaking, each computer will simultaneously with USB2.0 and USB3.0
.jpg "usb flash drive factory")
4.For U disk support USB3.0, we can usually distinguish the appearance of U disk, usually USB3.0U disc will be recognized, as shown:
