and I check the Novusun page and I download the bin file to update the firmware on card . with mach3 under plugin control and activation screen after press the config yellow button on my Novusun-Novusun-pluin-ver-3.0b a diag screen popup and then there is possible to update the card firmware by selected the *.bin file . so after update the bin file the usb communication with the NVNC4 card stop working.