: Obtain the driver package (usually a .zip file) and extract it to your computer. Use Device Manager Right-click the button and select Device Manager
https://www.samsung.com/us/support/downloads/ → Search "NP-R420" spd driver r420 download verified
If you are looking for a driver to connect a mobile device (often budget smartphones or feature phones) to your PC for flashing or data transfer: SPD Upgrade Tool : Obtain the driver package (usually a