... are as follows: 1, USB HOST interfaces; 2, USB Device Interface 3 way 232, 3-way TTL serial port; 4,100 M network ... the phone; 11, reset button all the way 12, Two LED lights, LED lights the way directed; 13, Camera Interface 14, headphone ... LCD interface, the development board comes standard with 4.3 "belt TOUCH LCD, and with 7-inch LCD optional.Packing included 5 V ...