... , and provides touch functionality meet your special needs, wherever your LCD is, in shop, supermarket, hotel lobby, office or so ... to open up the monitor or computer case.No external power supply is needed either. Used in any country with ... yearElectricalOperation VoltageTypical +DC 5V, +4.75V to +5.25VPower SupplyUSB, power ripple max.200mV rmsPower<2W, operating current<200mAAgency ApprovalsCE, FCC ...