... to the 8G; (remaining separate welding position) 8, WM9713 audio output, support for two output, two-way entry. And ... board.Bottom features are as follows: 1, USB HOST interfaces; 2, USB Device Interface 3 way 232, 3-way TTL serial port ... GPRS module interface 18, SIRFIII GPS module interface (including the antenna interface);19, Hayward WIFI module interface 20,50 PIN LCD interface, the development ...