... useful features: SD socket which can start system on Linux, Android, operation platform. Except big capacity EMMC flash, the main-board ... for serial port.; 4 USB2.0 HOST and 1 OTG, Audio in/out, digital camera in, 16 route DIO, Wifi with antenna, 2 ... . Product Specification: BS-EAM-6918(3.5” Freescale ARM Cortex-A9 quad/dual core 1.2G CPU on board SBC, 4USB/AUDIO/4RS232&RS485/2LAN ...