Hi Matthew,
Thanks for reaching out to us, I am sorry this is not working as expected and I am happy to help!
Thank you for letting me know the model number of the monitor and docking station! I looked up the monitor specifications and user manual and I would expect it to be fully compatible with this docking station. It is possible the monitor is not detecting the correct input port automatically and we can manually select the input to see if this helps.
For this monitor, the input select button should be the furthest from the power button, please press this button to cycle through the available inputs, VGA and HDMI, to see if the monitor may be set to the VGA input and not automatically detecting the HDMI signal.
Please let me know if this helps, and we can go from here.
Thank you,
Pat
Plugable Technology
support@plugable.com