14 │ SpecificationsEnvironmentalTemperature:0°C to 40°C (32°F to 104°F)-40°C to 65°C (-40°F to 149°F)Storage humidity 95% maximum relative humidity;non-condensingGeneralKeyboard model number KB740Connection type 2.4 GHz Wireless and Bluetooth dualmode technologySupported operating systems(2.4 GHz) • Windows 11/10/8/7/XP/Vista Server2003/Server 2008/Server 2012• Linux 6.x, Ubuntu, Free DOS• Chrome and Android• MAC OSSupported operating systems(Bluetooth) • Windows 11/10/8• Chrome and Android• MAC OSElectricalOperating voltage 2.2 V – 3.0 VBattery required Two AA alkalineRadio transmission Bi-directional communicationBattery required Range Up to 10 mPhysical characteristicsWeight (without battery) 500.90 gDimensions:Specifications122 mm (4.80 in.)363.40 mm (14.31 in.)35.52 mm (1.40 in.)• Length• Width• Height• Operating• Storage

Dell KB740 User Manual