I can confirm that 2 unlisted cams work. First I installed latest EOS Utility 3, then Beta, then close utility V3 (not running in background) then tested with R, no problem. Then tested 70D, no problem. Then with 50D "unable to connect" I had to run EOS Utility V2, connect 50D, close utility, then the 50D was recognized and worked fine with Zoom. Did not test with other streaming software. hope that helps.