Acer ConceptD CP3271K Pbmiippruzx 27" IPS Professional Monitor - 3840x2160 - 144Hz Refresh Rate - 4ms VRB - 400 cd/m2 - Built-in 4W Stereo Speakers - 2x HDMI-in - 2x DisplayPort - 4x USB 3.0 Hub (UM.HC1AA.P01)