Lexmark XM3250
After installing the Lexmark N8372 wireless option, an 'Unsupported USB hub, please remove' error is posted on the display panel.
Please contact Lexmark Technical Support for assistance.
LEGACY ID: SO8977
How to Install the MarkNet N8370 802.11ac Wireless Print Server
An “Invalid Engine Code” error message indicates a problem with one of the internal operating programs of the printer. The printer is not able to receive, and process print jobs until the printer is reset.