Elecom M-XGS31BBSK Series User Manual page 57

Once you click the "Right button", the left and right mouse buttons will be swapped.
When "Left button" is When "Right button" is
selected selected
Left click Left click
Change the mouse pointer speed
Adjust the mouse pointer movement speed on your PC if the mouse pointer moves too fast or
too slow.
1) Click on the quick settings panel on the bottom right.
2) Click on "Settings".
The settings page will appear.