Try using a USB 2.0 port rather than a USB 3.0 (blue) port, as some older modems have connectivity issues with newer USB standards.
Method 1: Extract Drivers via Windows Device Manager (Best Practices) vodafone mobile broadband k4201z driver download best
For users seeking to download the Vodafone Mobile Broadband K4201Z driver, we recommend: Try using a USB 2
If it doesn’t auto-run, open the drive manually and run the installer. we recommend: If it doesn’t auto-run