Samsung QB75C 75" 4K UHD Professional Smart Signage Display (LH75QBCEBGCXEN) - Resolution: 4K 3840 x 2160 VA, Contrast Ratio: 4000:1, Response Time: 8ms, Brightness: 350nits, 8GB Flash Memory, Wi-Fi + Bluetooth, Connectivity: 3 x HDMI 2.0, 2 x USB, 1 x IR in, 1 x Audio Out Stereo Mini Jack, 1 x RS232 in, 1 x RS232 Out, 1 x RJ-45, Wall Mountable: VESA (400 x 400mm), Operating System: Tizen 7.0