Main Chip A20 Dual Core (A31 Quad core optional) Main Frequency 1.5GHz RAM DDR3 1GB Storage NAND 4GB Out Storage Extended SD Card, SATA HDD Output HDMI/VGA Interface USB*4/RJ45*1/PCI*1 Wireless Module WI-FI, 3G optional Speaker Built In 2W OS Android4.2 and above Touch Function Infrared touch screen 2,6 Touch http://www.aomaktouch.com