See this Lexmark support page for details about how to configure your Lexmark printer driver.
Note that these instructions apply to Lexmark printers connected via Bonjour.
Note: In step 3, you will have to wait for the "Searching for new drivers" to time out, then choose the "Select a driver to use..." option from the "Print Using:" pop-up menu.
This document will be updated as more information becomes available.
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