... Support 2x USB host and 1x USB HS OTG Port for PCAudio Codec Support DSP based processing stereo codec with SNR ... switch , 1x Microphone Jack, 1x Buzzer Port Built-in metal or equivalence for EMC / EMIPower Management DC9V~DC36V power requirement with short ... emergency events. Robust industrial level car mobile data terminal, cab dispatching,taxi dispatching system,3.5G/GPS 7 inch MDT701,RS232 IO ports