PCI-E is currently the most widely used interface in personal computers; almost all motherboards have this type of slot. As long as your computer has redundant PCI-EX1/X4/X8/X16 interfaces, it can be installed. Siri Shortcut Function: Pre-set the scene in the Tuya Smart or Tmall Genie APP and add it to the Siri shortcut. After setup, activate Siri and say your command. The 433MHZ frequency antenna is used for remote control reception, improving the effective distance of remote control reception and enhancing remote control performance. The 2.4G frequency antenna is mainly used for WIFI signal reception, effectively improving signal quality through walls and increasing the effective transmission distance. Tuya Smart APP remote control for PC startup and shutdown, unlimited distance; as long as your mobile phone can access the internet normally, you can control your computer anytime, anywhere. Power Source: PCIE power supply Application: Desktop Rated Power: 0.2W Remote Control Distance: 20-50 meters Network Connection: 2.4G wi-fi Remote Control Learning: Up to 20 remote controls can be learned Remote Control Frequency: 433.92MHZ Bluetooth Control: Local Bluetooth automatic connection when disconnected Color: Black Material: PCB Package Contents: 1 x USB antenna card 1 x USB cable 1 x Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.