Keyboard 1.Metal Keyboard with Trackball] 2.waterproof,dustproof, vandal-proof 3.No need for driver installation Metal Keyboard with TrackballFor financial equipments like ATM, CDM, CRS, commercial equipments like vending machines, info-kiosks, telecommunication inquiry machines, internet surfing booths, etc AlgorithmsCompliant with ISO/IEC 9995 and GB/T 14081ApprovalCCCCEFeaturesWaterproof, ...