Microsoft Wired Desktop 400 for Business

The Wired Desktop 400 combines a spill-resistant keyboard and optical mouse to deliver all the features you need - and more - with Microsoft quality and reliability. Enjoy plug-and-play setup, quiet-touch keys, and a comfortable ambidextrous mouse. Use your mouse with your left or right hand - ambidextrous design makes it comfortable either way. A high-resolution optical sensor delivers greater accuracy and control.