Buy on Amazon : http://www.amazon.com/gp/product/B00DOZHLAA?tag=scratchandsti-20
Accell B086B-003B-2 UltraAV DisplayPort 1.1 to HDMI 1.4 Active Adapter - AMD Eyefinity Certified
Supports up to 4K Ultra HD and 1080p 120Hz
Up to a 300 MHz Clock Rate for Stereoscopic 3D Support
Compliant to HDMI 14b and DisplayPort Dual-Mode v11
Plug and Play No Software to Install or External Power Needed
Available in Mini DisplayPort 11 to HDMI