What is the difference between usb1.0, 2.0 and 3.0

The difference between usb1.0, 2.0 and 3.0 is: 1. The speed of USB1.0 is only 1.5Mb/s, USB2.0 reaches 480Mbps, and the transmission bandwidth of USB3.0 is as high as 5.0Gbps; 2. USB3.0 has much faster reading and writing speeds than USB1.0 and USB2.0.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

What is the difference between usb1.0, 2.0 and 3.0?

1. USB1.0 appeared in 1996, with a speed of only 1.5Mb/s (bit per second); USB1.1 was upgraded in 1998, and the speed was greatly increased to 12Mb/s;

2. The USB2.0 specification evolved from the USB1.1 specification. Its transmission rate reaches 480Mbps, which is 60MB/s converted into MB;

3. The latest USB 3.0 has a maximum transmission bandwidth of up to 5.0Gbps, which is 640MB/s.

USB3.0 introduces full-duplex data transmission. Two of the five lines are used to send data, the other two are used to receive data, and one is a ground wire. In other words, USB 3.0 can perform read and write operations simultaneously and at full speed.

3.0 is compatible with 2.0, but not vice versa. The essential difference is the reading and writing speed. The former is faster than the latter, and much faster. The voltage of the former is greater than the latter;

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