DPI (dots per inch) is a measure of a mouse’s sensitivity. It refers to the number of dots that the mouse cursor will move on the screen for every inch that the mouse is moved. A higher DPI means that the mouse cursor will move further for the same amount of movement, while a lower DPI means that the cursor will move less.
There are a few different ways to check the DPI of your mouse. One way is to look at the mouse’s specifications. The DPI will usually be listed in the product description. Another way to check the DPI is to use a software program. There are a number of free and paid software programs available that can tell you the DPI of your mouse.