A G502 on the diagram
The test above is laid out like a G502: left and right buttons, a wheel that clicks and tilts, and two thumb buttons that normally act as Back and Forward. Logitech gives the G502 HERO 11 programmable buttons and the G502 X family 13 programmable controls, but a web page only sees the ones set to a mouse-button or scroll function. The DPI buttons at the edge of the left button and the DPI Shift button under your thumb are drawn dashed: they work inside the mouse and never reach the browser. The table under this text lists every control and where it shows up.
If you’ve reassigned a button in G HUB, it sends whatever you gave it. Settings saved to the mouse’s onboard memory travel with it to any computer, so switch to a profile with the default functions before testing. A button set to a key press lights up in the keyboard tester instead.
Double clicks on a G502
The G502 HERO has mechanical main switches, where two metal contacts touch to complete each click. As they wear, one press can bounce into two presses a few milliseconds apart, which you’ll see as an unintended double click. The G502 X family switched to LIGHTFORCE hybrid switches, which register the click optically.
Click the left button 50 to 100 times at a normal pace, then do the same with the right button and the thumb buttons: a back button that fires twice takes the browser back two pages. Any press that follows the one before by less than the threshold (80 ms, adjustable) is flagged in red, with the gap in milliseconds. If the detector flags presses, work through Logitech’s steps in the questions below; a bouncing switch that survives them is a warranty or repair case.
Wheel and report rate
The wheel has two modes: notched for single-click precision and free-spinning for hyper-fast scrolling, switched with the button behind the wheel. For a scroll problem, Logitech’s troubleshooting page for the G502 says to check which mode it’s in, clean around the wheel with compressed air, plug the mouse straight into a port on the computer rather than a hub, and try another computer.
The polling-rate panel compares your reading with 1000 Hz, Logitech’s rating for the G502. If you’ve set a lower report rate, pick it under Compare with. For 4000 and 8000 Hz mice there’s an 8K polling rate test, and the MX Master page covers Logitech’s office mice. Every other mouse works on the standard mouse tester.
Every G502 control and where it shows up
| Control | In the tester above |
|---|---|
| Left and right buttons | Left and Right rows, and the double-click detector |
| Wheel click | Middle row |
| Wheel roll (notched or free-spinning) | Scroll wheel panel: Up and Down |
| Wheel tilt left and right | Scroll wheel panel: Left / right, while the tilt is set to scroll sideways |
| Two thumb buttons | Back and Forward rows |
| DPI up and down buttons | Nothing: the mouse changes its own sensitivity |
| DPI Shift (sniper) button | Nothing: the mouse lowers its sensitivity while you hold it |