... 15-pin VGA and DVI-D FrequencyH/V3080KHz / 6075HzPower Supply Type: External brickInput (line) voltage: 100-240 VAC, 50-60 ... )OSD ControlButtonsAUTO,+,POWER,-,MENUFunction Brightness, Contrast Ratio, Auto-adjust, Phase, Clock, H/V Location, Languages, Function, ResetTouch screen TypeKeetouch 22 SAW ... InterfaceUSB and RS232 CertificatesETL ,FCC,CE,RoHS 22inch SAW touch lcd display (dust-proof type)