The Difference of USB 2.0 & USB 3.0
First, USB3.0 is an upgraded version of USB2.0.
Second, USB (Universal Serial Bus), is a new interface technology, with high speed transmission, hot-swappable and can connect multiple devices at the same time. At present,
USB interface has three model: USB1.1, USB2.0 and USB3.0, can be backward compatible, theoretically USB1.1 transmission speed can reach 12Mbps, and USB2.0 can reach 480Mbps, USB3.0 can be Reach 5.0Gbps.
Third, the difference in appearance. USB2.0 is usually white or black, and USB3.0 is usually a blue color interface.
Below picture is the I/O Port of our Pos System, please check for review: