LG 50UL5Q-E 50-inch 4K UHD Signage Display (50UL5Q-E) - Resolution: 3840 x 2160 VA, Contrast Ratio: 4500:1, Response Time: 8ms, Brightness: 500nits, 8GB Flash Memory, Wi-Fi + Bluetooth, 2 x 10W Speakers, Connectivity: 3 x HDMI 1.4, 1 x DisplayPort 1.4, 1 x RS232C In, 1 x RJ45 (LAN) In, 2 x USB2.0 Type A, Audio Out, RS232 In, RS232C Out, Wall Mountable: VESA (200 x 200 mm), Operating System: webOS6.1