Samsung 98" QBT Series Digital Signage Professional Display (QB98T) - Panel Type: Direct LED BLU, Resolution: 3840 x 2160 (4K UHD), Brightness: 350 nit, Contrast Ratio: 1200:1, Response Time: 8ms, Built in Speaker(10W + 10W), Connectivity: Input: 1 x DVI-D, Display Port 1.2 , 2 x HDMI 2.0, 1 x HDCP2.2, Stereo mini Jack, DVI, HDMI, 2 x USB 2.0, Output: HDMI 2.0 (Loop-out), 1 x Stereo mini Jack, External Control: RS232C(in/out) thru stereo jack, RJ45, VESA Mount (mm): 800 x 400