@sergio-rius If you go to the Device Manager in Windows, right click on the device and select update driver. From there select "Browse my computer for driver software". Next you can "Browse for driver software on your computer" to find the driver if you have downloaded it and install it that way. I have had issues with my Prolific driver though after I have installed it where if I plug the adapter into different USB ports, Windows will get confused and revert back to the broken driver. If you have that issue after you already have the working driver installed, you can select "Let me pick from a list of device drivers on my computer". You should see 2 prolific drivers. Select the 3.3.2.102 driver and you should be good to go.