If a monitor connected to your 4-in-1 USB-C Hub with 2.5 Gigabit Ethernet shows no signal, try these steps:

• Try a different HDMI or video cable.
• Go to System Settings > Displays and click Detect Displays (hold the Option key on Mac).
• Test the monitor with a direct connection to confirm it works.
• Disconnect and reconnect the device.
• Confirm your computer supports video over its USB-C/Thunderbolt port.

If the problem continues after these steps, submit a support request.