This Lexmark MS312dn WorkGroup Network Duplex Laser Printer is a high-performance printer that uses thermal line printing technology that produces black and white prints with a maximum resolution of 1200 x 1200 DPI. It has a black print speed of 35 pages per minute and is perfect for printing on A5 (148 x 210 mm), B5 (176 x 250 mm), A4 (210 x 297 mm), and A6 (105 x 148 mm) paper sizes. With a memory of 128 MB, this printer is capable of printing 1K-5K pages without needing a drum replacement. This printer is networkable and comes with Ethernet (RJ-45) and USB 2.0 connectivity, making it easy to print from multiple devices. It also has a duplex feature that allows for automatic double-sided printing. This Lexmark MS312dn printer does NOT contain any chemicals or materials specified in the California Prop 65 list. Get this high-performance printer for your workgroup and enjoy fast, high-quality printing.