2.4G 5-Key Nona Wireless Mouse Mao Function Leif Button Right Button Scroll Wheal Forward Button Backward Button Gl RW N= DPI Elect Switch (500/1000 DPh Northerner battery cover located under the mouse and install 2 BAA galleries according 1o their polarity ® Pull out the Nao Receivership the souse as the photo above, and the mouse will be power on (Put the Nona Receiver back to the slot in the mouse to power off).