Buy on Amazon.com : http://www.amazon.com/gp/product/B005DPEHNI?tag=lottalatte-20
Apple VESA Mount Adapter Kit for iMac and LED Cinema orApple Thunderbolt Display
Compatibility - 24-inch iMac aluminum and glass 27-inch iMac 24-inch LED Cinema Display 27-inch LED Cinema Display 27-inch Apple Thunderbolt Display
Wall mount or articulating arm not included
