1. Motherboard for HD digital signage solution. 2. Single Board Computers; 3.12cm*12cm; 4. Cost-effective. ... Realtek ALC 662HDA,1*F_Audio pin header,1*Line-outBack I/O 1*DC-in/12V, 1*HDMI,4*USB,1*Lan ... ,1*Line-outOn board I/O ITE8718 chip,2*COM(RS-232),1*8 GPIO,1 ...