Connection Failed Alert in Venus v4; Laptop Using Docking Station; Docking Station Com Port Failure

Potential Symptoms

  • No or intermittent communication to the display.
  • Venus alert: Connection Failed.
  • Com port locks up; can be reset with computer reboot.
  • Loop back testing of serial component passes while port active.
  • Windows Device manger shows no alerts associated with Com port.


  • Product Family: Message Displays
  • Product: Galaxy Displays
  • Component: USB to Serial adapter; Moxa (NPort) USB to Serial adapter
  • Control System: Venus 1500


  • The Docking station has a failing or faulty USB port.


  • Direct connect the USB to Serial device directly to the laptop's built in USB ports.
  • Verify Com port USB to Serial device is registered to and update Venus accordingly.


KB ID: DD4206511

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