Here's the link to the Lexmark website where you can download the drivers. http://bit.ly/bIqb2u
. On the page, click on the Macintosh dropdown to choose the version of your operating system (10.4, 10.5, 10.6, etc). To check the Macintosh version if it's 10.4, 10.5, 10.6, etc., click on the Apple icon on the upper left corner of your desktop. Then, click on About this Mac. Download and install the software.