The Lexmark MS810DN mono laser printer is designed to let you focus your time where it s most effective-helping to grow your business and staying ahead of the competition. With a print speed of 55 pages per minute, 1200 x 1200 dpi, first page out in as little as 4.8 seconds, two-sided printing and networking, this network-ready laser printer satisfies the most demanding business. Take advantage of upgradable 512MB memory, 800MHz dual-core processor and Gigabit Ethernet. For added security, use secure blank check paper and accounting software such as Quickbooks, Versa Check or Quicken.