Thank you in advance to read out my annoying issue that I am trying to figure it out.
I have just purchase GeoVision dongle for 4 channels 3rd party cameras. It’s come with the original GV-NVR software disc. I install the software and dongle driver is install fine as I think. I have attached the image for dongle driver installed. I added 3rd party cameras. It’s fine here until, but when I try to assign camera to channel, it show Connection failed. Limited by USB key. The number is 0. I have attached the images for reference in case if it help out to rectify the problems. I have two Hikvision cameras and two other brands which are ONVIF supported.