ViewSonic IFPD7550-3 75-inch Multi-Touch View Board (FPD75503) - Processor: ARM Cortex A53 Quad Core 1.2G Hz CPU, Resolution: 3840 x 2160, Contrast Ratio: 1200:1 (typ.), Aspect Ratio: 16:9, Response Time: 8 ms, Brightness: 350 nits (typ.) 300 nits (min.), Memory: 2GB DDR3, Storage: 16GB eMMC, Graphic: ARM Mali-450 Quad Core, Speakers: 16W x 2, Connectivity: Input: 3 x HDMI, 1 x RGB / VGA, 1 x DisplayPort, 1 x Audio, 1 x CVBS (AV), 1 x RS232, 2 x PC Slot, Output: 1 x HDMI, 1 x Audio (Earphone out), 1 x SPDIF, LAN: 1 x RJ45, USB: 4 x 2.0 Type A, 2 x 3.0 Type A, 2 x 2.0 Type B (For touch), System: Windows 10 / Windows 8 / Windows 7 / Windows XP / Vista / Linux / Mac / Android / Wince / Chrome, Wall Mount (VESA ): 800 x 400mm