A31 motherboard delete the SATA interface which is not commonly used, increase tit group (a total of four groups) universal serial port to the customers for the extension.CPU is Allwinner quad core 64 bit dual channel DDR3 highspeed processor, clocked at up to 1.2GHz, with a strong video processing capabilities, can be compatible with most of the video and image decoding format.Equipped with Android 4.4 system, standard 2GB DDR3 and 8GB EMMC, multimedia decoding, LCD driver, Ethernet, HDMI, WiFi, 3G, camera in one. Support HDMI/VGA video output, Dual 8 bit LVDS driver, dynamic configuration of LCD parameters, easy to achieve 7 inch ~60 inch LCD support.