AV Interface: DisplayPort to HDMI, Interface Standard: DP 1.2 / HDMI 1.4b, Supported Bandwidth: 21Gbps, Maximum Input Resolution: 3840x2160@60Hz 4:4:4 8bit, Maximum Output Resolution: 3840x2160@30Hz, HDCP Support: 1.4, Supported Audio: Audio Pass Through, Special Features: Supports both MST and SST modes, Output ports are grouped in computers OS: 1+2=Display1, 3+4=Display 2, Supports extended and duplicated desktop mode, Requires an Intel / AMD graphics card that supports 4 displays via an MST enable DisplayPort output