The Adesso PS/2 Mini Trackball keyboard designed for use with most versions of the Windows operating system. It features 104/105 total keys. This total includes 88/89 primary keys, an embedded numeric keypad and 12 dedicated function keys.
The keyboard also features a miniature trackball in its upper right-hand corner, which is capable of emulating the functions of a standard mouse. Mouse buttons that work with the trackball are located in the upper left-hand corner of the keyboard. Move back and forth between the keyboard and mouse controls with speed and ease by using this unique keyboard.