Elo E222369 4202L 42 Infrared Interactive Digital Signage Touchscreen Contrast Ratio: 4000:1 Response Time: 8ms Horizontal Refresh Rate: ±89°/178° Vertical Refresh Rate: ±89°/178° Connectors: Input: AC power input, USB type B (for Touch), VGA, 2x HDMI, GPIO, DisplayPort, Audio Line in Output: Audio Headphones out, RJ45 (for optional OSD remote) Features: Over 40% thinner than the 4201L Professional-grade hardware with strengthened touchscreen glass to withstand the rigors of public use Optional plug-in computer modules: Microsoft Windows with Intel Core or Android with Qualcomm Snapdragon (supports EloView) Thin (