The 2.4 GHz RF Wireless Mini Keyboard with Optical Trackball from Adesso is a wireless keyboard with a USB interface. It features a black color scheme, Internet and multimedia function buttons and an integrated trackball. This wireless keyboard is an excellent choice for users who would like to add the freedom afforded by wireless interface to their computers.
Wireless Freedom
The wireless receiver operates using RF technology, eliminating the need for a line of sight connection to between devices that is associated with IR communication. The 2.4 GHz technology allows you to use the keyboard at distances of up to 100' (30 m) from the receiver.
Optical Trackball
The integrated optical trackball allows you to use easily control your computer's cursor, without the need for a separate mouse. Left and right mouse buttons and a scroll wheel are also built into the keyboard.
USB Interface
The wireless receiver connects to computers with a USB interface, letting you easily connect it to most modern computers.