4K X 2K@30Hz Uhd: Support 4K X 2K & 3D Video Formats Over Hdmi, Compliant To Hdmi 1.4B Specification Up To 3.0Gbps, Jitter Cleaning Pll For Best Compliance, Built-In Ddc Active Buffering Side-Band Signals. Note: If You Want To Get 4K Resolution, Please Make Sure Both Your Computer And Hdmi Monitor Supports 4K Resolution Firstly, Or You Will Get A Lower Resolution. That Means If Your Monitor Supports 4K, While Your Computer Only Supports 1080P, You Can Only Output 1080P.