TrayIcon should always display if installed
Suggestion: The DisplayLink Manager TrayIcon should show even if the hardware is not detected. In that case, it should provide links to helpful KB articles (or better yet, include the troubleshooting steps offline).
That would have saved me about three hours of troubleshooting a 3rd-party (LizTek) product before I finally stumbled on this site.

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MycGyver commented
I understand the request but I think you need an option to easily hide the icon. If we use in a corporate conference room, every user that plugs into that conference room would have extra icon in the tray permanently and have extra software running even though they may never use that conference room again. There should always be an option to not display the icon and not load the software drivers by default.
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Warren Downs commented
Looking forward to this improvement! DisplayLink is great technology and this will make it better! Thanks for the quick response to this suggestion!