Howdy! First, I am not an IT person, only a PC builder. Please verify this if you are unsure about using it! For some PCs, they have auto tuning on downloads, Plugging this in I went from approx. 2-3 hour downloads (WIFI only, no Ethernet cord) to about 30-45 minutes! Open your CMD interface (Windows key, type in CMD) Run it as administrator. Type in : netsh interface tcp show global and hit enter. I have downloaded my game updates with it, often times in 30 min or less. Please let me know if it helps!!