Rechargeable Full-Size Wireless Keyboard & Mouse with Bluetooth 5.0 & 2.4G (Gray)

USB2.4G connection: 1. Flip the power switch to ON to turn on the keyboard 2. Insert the USB into the computer, press and hold the button FN+~, the connection is successful   Bluetooth connection: 1. Flip the power switch to ON to turn on the keyboard 2. Turn on your device's Bluetooth to enter the search state (system settings - turn on Bluetooth - search and add) 2. Press and hold the key FN+1 or FN+2 or FN+3 on the keyboard, the light flashes, the device will display "O50 keyboard BT", you can click to connect successfully.       Multi-device connection: 1.FN+1: Connect to Bluetooth device 1 2.FN+2: connect to bluetooth device 2 3.FN+3: connect to bluetooth device 3 4.FN+~: connect to USB, 2.4G wireless reception 5. Press FN+1/2/3/~ alone to switch the paired devices 6.FN+1/2/3, press and hold for 3 seconds in combination: flashing light, can start the searched state (connect a new device)     Additional instructions: 1. For the first connection, you need to switch the keyboard to t