The Comfort Curve Keyboard 2000 is a compact ergonomic keyboard designed for use by individuals with carpal tunnel syndrome or repetetive strain injury. This keyboard is intended to allow the user to work on a computer with the hands in a more natural position. The keyboard's curved layout helps the hands and wrists rest more naturally. The keys are notebook-like with an ultra-thin profile. Internet and multimedia hot keys allow access to the Internet or multimedia at the touch of a button. The keyboard is spill-resistant and operates as soon as it is plugged in. COMPATIBILITY: For use with IBM and compatible computers or Apple Macintosh computers. SYSTEM REQUIREMENTS: Windows-based computers require Windows 7, Windows Vista, Windows XP Pro/Home/Media Center Edition/Tablet PC Edition, or Windows 2000 operating system; 233 megaHertz (MHz) or higher processor; 128 megabytes (MB) RAM; USB port; Microsoft Internet Explorer version 5.0 or later, MSN Explorer versions 7.0 or 8.0, Netscape Navigator versions 6.1, 6.2, 7.0, or AOL versions 7.0, 8.0, or 9.0 browser. Mac computers require Mac OS X, versions 10.1.5 through 10.3 operating system, (excluding Mac OS X version 10.0); Apple Safari 1.2, Microsoft Internet Explorer 5.2.3, MSN Explorer 4, Netscape Navigator 7, Mozilla Firefox 1.0, or Opera 7 browser; iTunes. WARRANTY: 3 years.