1. For 2.4G mode (please make sure the mouse is currently in 2.4G mode):
   
   
   • Press and hold the middle scroll button and the left and right click buttons simultaneously for 5 seconds until the 2.4G indicator light (channel indicator light 1) flashes.
   • Insert the 2.4G USB receiver into your device, and the mouse will connect to your device automatically.


2. For Bluetooth mode:
   
   
   • Turn off the mouse.
   • Press and hold the middle scroll button and the right-click button simultaneously while turning on the mouse. The channel 2 indicator light will flash quickly.
   • Connect the mouse to your device via Bluetooth.

1. Ensure the mouse is fully charged before use.
2. Confirm that the mouse is in the correct mode by checking if the corresponding connection channel light is flashing.
3. If you are using the USB dongle to connect the mouse:
   
   
   • Unplug and re-plug the USB dongle into a different USB port.
   • Try using a different USB port to rule out any potential issues.
4. If you are connecting the mouse via Bluetooth:
   
   
   • Delete the mouse Bluetooth from your device's Bluetooth listing.
   • Restart your device and initiate the pairing process again.
5. Test the mouse by connecting it to other devices to determine if the issue persists.

If the problem persists, please refer to the 'How to re-pair the mouse with the USB dongle and reset the mouse Bluetooth?' steps to re-pair and reset.

1. Ensure that the mouse is fully charged
2. Please refer to the 'How to re-pair the mouse with the USB dongle and reset the mouse Bluetooth?' steps to re-pair and reset.

1. Fully charge the mouse and clean the trackball and inner white rollers by ejecting them.
2. For USB dongle connection, unplug and re-plug the USB dongle.
3. For Bluetooth connection, delete the mouse Bluetooth from your device's listing, restart the device, and re-pair the mouse.
4. Try connecting the mouse to other devices to check if the issue persists.

1. Use the charging cable that came with the mouse. The mouse can only be charged with USB A to USB C charging cables.
2. Try connecting the charging cable to a USB port on your computer. The mouse requires a charging interface with a 5V output to charge, and the USB port on the computer is the recommended choice.

If you have misplaced or lost your USB dongle/receiver for the EM03 mouse, you can purchase a universal USB dongle/receiver from ProtoArc website at the following link: https://www.protoarc.com/collections/all-products/products/usb-receiver

After acquiring the new USB dongle/receiver, please ensure you follow these steps to re-pair the EM03 mouse before using it:

1. Press and hold the middle scroll button along with the left and right click buttons simultaneously. Keep them pressed for 5 seconds until the 2.4G indicator (Channel Indicator 1) light starts flashing.
2. Insert the new 2.4G USB receiver into your device, and the mouse will automatically re-pair with the new USB dongle/receiver.