Knowledge Base CAM300 USB 2.0 video inputs resolutions SHARE2/SHARE2U/CAM300 with StarLeaf Compatibility with Barco ClickShare CX20/30/50 SHARE2/SHARE2U/CAM300 with GoToMeeting, webex and StarLeaf HDMI LED blinking USB audio devices USB 2.0 extenders Crestron modules SHARE and CAM software control Power line frequency artifacts USB 2.0 cameras supported