It's easy to change your mouse's DPI settings on your PC. RyanKing999/Getty Images You can change your mouse's DPI in several ways, but the easiest is through the Settings menu. DPI, or "Dots Per Inch," is a stat used to measure how fast your on-screen cursor moves when you move your mouse. Using the computer's settings to force a slow mouse to go faster can occasionally cause glitches, and make the cursor inaccurate. Visit Insider's Tech Reference library for more stories. DPI, or dots per inch, is the measure of a computer mouse's sensitivity.