Labels:text | letter | font | document | paper | book OCR: To use the Microsoft Natural Keyboard, you need: A PC or compatible with: 286 or higher processor · MS-DOS® operating system version 2.0 or later . One PS/2®-compatible mouse port, or one 5-pin DIN keyboard port . The keyboard is NOT compatible with a serial port. · MDA, CGA, EGA, VGA, SVGA, XGA, or VESA VCI-compatible video adapter To take advantage of the IntelliType software and Windows function keys, you also need: · Microsoft Windows™ operating system version 3.1 or later . One 3.5" disk drive or one 5.25" High Density disk drive