The SM1 Slim Mechanical Backlit Bluetooth Keyboard supports multiple connectivity modes. You can switch between them using the Fn key and the number keys (1–4).

Connectivity modes:

Fn + 1: Bluetooth Profile 1  
Fn + 2: Bluetooth Profile 2  
Fn + 3: USB-A Wireless Receiver  
Fn + 4: Wired Mode  

Press and hold the Fn key, then press the corresponding number key to switch to your desired mode.