What are the steps to pair my mouse in wireless mode?
Press and hold the left button, right button, and scroll wheel simultaneously for 3 seconds. The LED will turn blue and flash indicating it is entering pairing mode. Insert the USB receiver into a USB port on your computer; when the blue light turns off and changes to neon lighting, pairing has been successful.
From the official Delux M800 Ultra Wireless Gaming Mouse manual, page 5
Have a follow-up question?
Answers from the official manual.
Common questions