When the USB3.0 interface cannot be used, the USB2.0 interface is normal, and the driver of the device manager has the "general serial bus controller".
Appears in the device manager:
It shows that the USB3.0 driver of this machine is not installed normally. You can download this driver for installation.
The difference between USB3.0 and 2.0
USB3.0 and USB2.0 can be compatible with each other, that is, the USB2.0 device is inserted on the mouth of USB3.0, or the USB3.0 device is inserted on the mouth of USB2.0, which can be used normally. Of course, it can only reach USB2. 0 transmission speed.
The data bandwidth of USB3.0 is ten times the USB2.0, which can reach 5GB/s (480MB/s), and the synchronous transmission bandwidth can also reach 384MB/s. This is one of the main differences between USB3.0 and 2.0;
USB 2.0 Based on the semi -dual -work second -line bus, it can only provide unilateral data transmission, and USB 3.0 uses the signal line of the simple four -line system of the puppet, so it supports the two -way concurrent data to spread Key reason.
In addition, USB 3.0 also introduced a new power management mechanism to support standby, dormant and suspension.
it works
it works
it works