Lexmark MX521adeLexmark MX521ade A standard two sided document feeder adds powerful batch scanning capabilities. A durable steel frame, available extra input trays and toner cartridges that can print up to 25,000 pages all minimize interruptions. Its innovative font outlining technology makes even the smallest gray text crisp and clear. Gives you the power to do a combination of faxing, printing, copying, and scanning for maximum productivity. And you can be