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Independent model diagnostic center

Logitech MX Master 3S: test what you can before replacing anything.

Check MX Master 3S pointer, buttons, scroll behavior and browser event timing independently before changing Logi Options+, Bluetooth or receiver settings.

Start with evidence

Relevant live checks

Mouse Button TestVerify left, right, middle, and extra mouse button events.

Mouse Button Event ViewerSee browser button numbers for left, middle, right and additional mouse buttons that reach the page.

Double Click TestCheck intentional double-click timing and event detection.

Mouse Scroll Wheel TestVerify vertical and horizontal wheel events.

Mouse Horizontal Scroll TestCheck whether a mouse, trackpad or tilt wheel sends horizontal wheel deltas to the browser.

Mouse Polling Rate EstimateEstimate pointer event frequency in the browser.

Model-specific facts

Facts that change how you test it

Logitech specifies an 8,000 DPI optical sensor for MX Master 3S.
Logitech documents sensitivity adjustment through Logi Options+ on supported Windows and macOS systems.

Connections: Bluetooth Low Energy · Logi Bolt receiver on supported package/region configurations · USB-C charging

Diagnostic focus

Problems this center is designed to narrow

Pointer moves but buttons do not register
Scroll wheel or horizontal scroll problem
Accidental double-click symptoms
Browser input works but Logi Options+ or an app behaves differently
Bluetooth/receiver path comparison