Transmits video from compatible computer or tablet to compatible HDTV monitor or projectorCompatible with video resolutions up to 1920 x 1200 (WUXGA) and 1920 x 1080 (1080p) Compatible with Apple MacBook MacBook Pro MacBook Air iMac Mac mini Mac Pro Surface Pro/Pro 2/Pro 3 (not Surface for Windows RT) Compatible with ThinkPad X1 Carbon X230/X240s L430/L440/L530/L540 T430/T440/T440s/T440p/T530/540p W530/W540 Helix