Vortex CORE Keyboard @ techPowerUp
 

The Vortex CORE is a keyboard that takes up less than half the space as an average full size keyboard. It does this by having just 47 keys in what is referred to as a 40% keyboard layout. With no dedicated arrows, number keys and function keys, it still manages to be an extremely functional keyboard.

http://www.techpowerup.com/reviews/Vortex/CORE/