Appendix A Installing a USB Driver 
A-13 
A.4 Installing the USB Driver for an AS Series CPU module in 
Windows 10 
Windows 10 driver signature enforcement provides a way to improve the security of the operating system by 
validating the integrity of a driver or system file each time it is loaded into memory. Because the Delta PLC USB 
driver does not include the driver signature, this section shows you how to disable driver signature enforcement 
in Windows 10 to successfully install the Delta PLC USB.    Once you disable the driver signature enforcement 
setting, it returns to its original state after restarting Windows. 
This section describes the steps to disable driver signature enforcement in Windows 10. 
1.  Click the Windows Start button and then click Settings. 
2.  In the Settings window, click Update & Security. 
A (Setting)  B (Update & Security)