KidzMouse Colby T-Rex Optical Child Sized Mouse KidzMouse KM006-02-1 Colby T-Rex USB/PS/2 Optical Mouse General Features: Colby the T-Rex dinosaur design Patented design for small hands Works the way a child's hand works with a squeeze rather than a tap Easy to use, small, and comfortable for little hands 2 Buttons Optical tracking Precise cursor momen USBinterface ( USB to PS/2 adapter included)