Geniatech DB33999E and K2-3388 are the arm single board computer boards based on Rockchip RK3399, integrating HDMI OUT, LVDS/EDP mainstream display output interface, support multi-screen display/splicing display and adding HDMI IN (4KP30), LTE (4G), Tuner, GTIOT, RS232, WDT One-stop service with POE, supporting multiple functions and meeting the needs of more developers in different scenarios.