... ,ExpandableSerial Port1 x RS232 serialUSB Port4 x 2.0 USB, In addition,optional USB Hub with 4 ports outputEthernet 100/10Base ... :1LCD Back light Life(Typ.)50,000 HoursTilt AdjustFrom 0° to 75°OSD ControlBrightness, Contrast Ratio, Auto-adjust, Phase, Clock, H/V ... ; Output voltage/current: 19 V at3.42 AMonitor:Internal brick in base; Input (line) voltage: 100-240 VAC, 50-60 HzOther ...