Microsoft Comfort 5050 Desktop Keyboard *Ergonomist-approved Comfort Curve design 
The Comfort Curve design from Microsoft encourages natural wrist posture and is easy to use. * Advanced Encryption Standard (AES) 128-Bit Encryption 
This keyboard features Advanced Encryption Standard (AES*) technology, which is designed to help protect your information by encrypting your keystrokes. Each keyboard is permanently paired with its receiver at the factory—no key information is ever shared over the air.
 * Built in palm rest 
Built in palm rest helps support and straighten wrists. * Wireless freedom and convenience 
Give yourself room to move with a wireless keyboard that lets you work without worrying about tangled wires. Mouse not included Retail with mouse is $129