What is better about USB 3.0 connectors than USB 2.0 connectors?

To compare the USB3.0 connector than the USB2.0 connector is good at where, there are five aspects are not we can not get around, respectively, is the transmission rate, physical bus, power consumption, bandwidth, bus utilization, the specific content is as follows:

1, the transfer rate USB2.0 connector provides a transfer rate of 480Mbps, while the USB3.0 connector provides a transfer rate of 4.8Gbps, the USB3.0 connector transfer speed than the USB2.0 connector increased by 10 times. 2, the physical bus USB3.0 connector than the USB2.0 connector doubled the number of wires, from 4 to 8 times higher. times. Because the additional wires require more cable and connector space, so the design of the USB3.0 connector such a new connector. 3, power consumption USB2.0 connectors provide up to 500mA of current, while the USB3.0 connector provides up to 900mA of current. The use of USB3.0 connectors can provide more power for the device when needed, and save power when the device is connected but idle.4, bandwidth USB3.0 connectors use two unidirectional data paths, - one for receiving data, the other for transmission, while the USB2.0 connector can only be processed at any one time only one direction of the data, rather than unidirectional communication.5, bus utilization USB3.0 connector than the USB2.0 connector more than one - a new feature (the use of packets NRDY and ERDY), its main role is to allow the device asynchronous notification of the host ready. To summarize: USB 3.0 connectors offer better speeds and more efficient power management than USB 2.0 connectors. While the USB 3.0 connector is backward compatible with USB 2.0 standard devices, data transfer speeds are limited to USB 2.0 levels when these devices are interoperable.

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