The driver gets installed with the SDK itself. You can confirm it by checking the following path: C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.2\drivers.
Even if the driver is not installed, the device should come up in the Device Manager with an exclamation mark. Please confirm whether the power LEDs are ON in the DVK after connecting the USB cable.
If the USB plugin the LED is on , and I have confired that in my PC there are have "1.2\driver" folder under the "programm files\cypress folder " .
But If I plugin or out the USB Cable , there are no effects on the PC 's "devices manager" , we know if the PC indentify a USB device, the "devices manager " will refresh if the device plugout !
I can not find the guide about how to use the DVK board and how to set the software environment so developers can develop the firmware .application and so on .... So when I open the eclipse IDE which located in your USBSuite and loaded the CyUSBSuite example , there are a lot of errors , It seems that there are errors in SW environment !
Thanks a lot for updating the thread.