Lexmark Optra M410 Laser Printer (Pc/Mac 4K00252) 600 x 600 dpi resolution, up to 12 pages per minute Parallel, serial, and USB interfaces Supports DOS, Windows, OS/2, Macintosh, Linux, Unix, and more 74 MHz processor; 4 MB memory, expandable to 132 MB 350-sheet paper tray, expandable to 850