This controller board is for testing, evaluating or in final production with our 3.5 inch TFT displays and specific compatibility for NHD-3.5-320240MF-ATXL# models. This board has a 20-pin FFC connector. This development tool has a 3.3V supply voltage, 8-bit parallel interface with SSD1963 controller and an operating temperature range from -20 to 70 degrees Celsius.