21.5 Inch Open Frame Touch Screen Monitor All in One POS System Wall Mount Computer LED Display. Industrial Grade A LED Display: 16:10 aspect ratio with 1920x1080 resolution and 400 cd/m2 brightness. 10-Point Capacitive Touch: True-flat capacitive touchscreen supporting multi-touch interaction. Durable Metal Alloy Housing: Robust construction with VESA 100x100 wall-mount compatibility. Comprehensive I/O Connectivity: Includes 6 USB, 1 RJ45, 2 COM, 1 HDMI, 1 MIC, 1 Audio, and 1 VGA port. Global Safety Certification: Power supply passes UL certification; products comply with RoHS, CE, and FCC. Flexible Configuration Options: Optional Intel Celeron, i3, i5, i7 CPUs with RAM up to 8GB and SSD/HDD storage. 2-Year Warranty Coverage: Comprehensive warranty covering mechanical defects for two years.