Views: 4 Author: Site Editor Publish Time: 2022-01-15 Origin: Site
In daily life, the application of USB interface in daily life is still very extensive. Its USB interface is a PC external interface, and it has become a general interface standard in the PC industry. However, with the continuous development of the times, there are now more updated versions of the USB Panel Mount cable, such as version 2.0 and version 3.0 that are commonly used now. So what is the difference between USB 3.0Panel Mount cable and USB 2.0Panel Mount cable? Now I will introduce the difference between the two
Difference between USB 3.0 Panel Mount cable and USB 2.0Panel Mount cable:
1. Backward compatibility
The USB 3.0 interface is the same as the previous upgraded version, and its physical characteristics are backward compatible. That is, USB 2.0 devices, interfaces and wires can all support the USB3.0 standard to achieve the super-speed of Superspeed. The compatibility of USB 3.0 is mainly reflected in the design of the interface. USB2.0 is divided into 4 lines, two pairs of lines are used for data input and output, and two pairs are used as power supply circuit and ground line. The USB3.0 version adds 5 electric shock designs on the USB2.0 version interface, and the new electric shocks are arranged behind the 4 USB2.0 contacts. Users can distinguish the difference between USB3.0 and USB2.0 from the structure of the USB interface.
2. The speed is effectively improved
The high transfer rate of USB 3.0 reaches 4.8Gbps, which is ten times higher than that of USB2.0. In theory, USB3.0 can transmit 27GB high-definition video within 70S, while it takes more than 15 minutes to switch to USB2.0. However, to achieve this efficiency, USB3.0 also needs to be equipped with a storage device that can support USB3.0 speed. In addition, the Windows system also needs to install a new Mass Storage Device driver to support the USB3.0 standard.
3. Two-way transmission
USB 2.0 input and output terminals do not support simultaneous work, but among the five additional lines of USB3.0, two provide data output, two provide data input, and four lines can simultaneously achieve bidirectional transport. The two-way transfer function can greatly improve applications such as synchronizing information or data backup.
4. High power supply capacity
The excellent comprehensive performance of USB 3.0 is not only reflected in higher speed, but also in power supply capability. At present, there are many electronic products on the market that need to be charged through the USB interface. Due to the huge market demand and the increase of high-power electronic products, developers have also improved the power supply capacity of USB3.0 from 100mA to 900mA. This means that USB technology will be used in more electronic products.
5. High performance
USB 3.0 technology introduces a higher power supply protocol standard, and also abandons the device polling mode and changes to the interrupt mode. To put it simply, the USB bus controller still needs to periodically check the data transmission status of the device when the USB connected in the USB 2.0 mode is inactive or in standby. After the USB 3.0 mode, the device can completely cut off the connection with the USB in standby mode. If the connection is to be restored, it will automatically send an interrupt signal to the controller, and the controller will start to perform data transmission tasks.
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