How do I connect the G435 to my PC, Mac, or PlayStation using LIGHTSPEED?
Insert the LIGHTSPEED USB receiver into the USB port of your device, then press and hold the Power button for a minimum of 1.5 seconds. The LED will turn cyan once the connection is established. (Page 3)
From the official Logitech G435 Lightspeed Wireless Game Headset manual, page 3
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