USB7 can not be used after Win7 restarts the system

USB3.0 and 2.0 transmission speeds vary greatly. Now many of the most popular motherboards are equipped with 3.0 USB ports. In general, as long as the external device supports 3.0 ports, we will use 3.0 interface to transmit data, but some users report In the win7 system 3.0 transmission interface can be used, but after the restart, there will be problems that cannot be used. What is the cause of this problem? How to solve it? Let's look at the solution that Xiaobian brings to everyone! br> 1, reinstall the motherboard USB3.0 driver;
2. Should the broken desktop right click, open computer management, locate device Manager, and then locate the universal serial bus controllers;

< Br> 3. Right click on the USB3.0 root hub property, find the power management, allow the computer to shut down the device to save power check, remove, restart the computer, try to use the USB3.0 interface.
Through the above method we can solve the problem that usb3.0 port can not be used