Acer ConceptD CM3271K bmiipruzx 27" 4K UHD IPS Monitor - 3840x2160 - 60Hz Refresh Rate - 4ms GTG - Built-in 4W Speakers - AMD Free-Sync - HDMI 2.0 - DP 1.2 - USB Type-C - Headphone - 4x USB 3.0 (UM.HC1AA.001)