So I got the g502 lightspeed a while ago, and I recently leaned about power play and was worndering if the little circle module next to the mouse is the power core
logitech LIGHTSPEED Wireless Gaming Mouse User Manual - Manuals+
Logitech PowerPlay Wireless Charging Pad Reviewed With G903 and G703 Gaming Mice - Page 3 of 6 - Legit Reviews