Learn more about Silverstone Express Controller CardInternal Ports1 x Low profile PCIe x1SpecificationsOperation frequency: 2.4GHzEIRP: 3.76dBm (Measured max)Operating range: 20 meter (Free space)Battery type: CR2032 (Lithium manganese button battery)Nominal voltage: DC 3.0VEnvironmentOperating temperature: 0 ~ 40 degree COperating humidity: 10% ~ 90% non-condensingFeaturesFeaturesControl your computer from anywhere in the room using 2.4GHz RF remote2.4GHz receiver PCIe card includedWorks as far away as twenty meterIncludes power / reset switch Y cableIncludes optional low profile expansion slot coverIntegrated PC speaker on receiver assist in providing auditory response while in useDimensions & WeightDimensions4.72" x 2.68" x 0.83"Weight29.6g