1. after the installation is complete, according to the prompt information, must restart the computer.
 2. if your computer has installed this driver or a different version of the driver, you must first delete the original drive, restart the computer, to install again
 Otherwise, you will be prompted " unable to install new hardware".
 3. please do not use other versions of the same kind of driver, otherwise it will affect the development board performance, be sure to install the driver we provide once before use.
 4. this driver applies to YF - us b - 485 series products, YF - us b - TTL download line and other products.