The device cannot detect that the Parallel 1284-B interface is connected.
Enable the Optional Parallel Port by going into:
If the issue persists, search for more information related to this issue or contact support for further assistance.
Unable to Connect to the Wireless Network when Using the MarkNet N8350 / N8360 / N8370
Checking the parallel or serial interface card for proper installation can help you print again from the computer.