Model facts that change the troubleshooting path
Logitech specifies a HERO 25K sensor with 100–25,600 DPI and 13 programmable controls.
G502 X PLUS uses LIGHTSPEED wireless and USB-C charging; Logitech lists up to 130 hours constant motion with RGB off under its test conditions.
Test matrix
What to test and what a pass actually tells you
Run the test closest to the symptom. A passing result narrows the diagnosis; it does not certify the entire device.
A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.
→A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.
→A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.
→A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.
→A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.
→Diagnostic focus
Problems worth separating on this model
Model-specific problems
Start with the symptom people actually search for
These paths combine this model's documented limits with live evidence, instead of copying a generic troubleshooting checklist.
Exact specifications
Compatibility questions tied to this model
Evidence handoff
If the browser cannot reach the suspected subsystem
Keep the browser result as one observation, then move to the operating system or manufacturer diagnostic that can see the protected hardware state. Do not interpret an unsupported browser API as a failed component.
For model-specific firmware, drivers or service diagnostics, use the official Logitech source linked on this page.