If you cannot access the internet on the OptiPlex 790, download the driver on a different computer, save it to a USB flash drive , and then transfer it to your Dell machine.
Download the file to a USB drive, transfer it to your OptiPlex, and run the installer. Automatic Update (Best for Convenience) Dell SupportAssist If you cannot access the internet on the
Double-click the file and follow the prompts to install. 🛠️ Troubleshooting Connection Issues If the driver installs but you still have no internet: transfer it to your OptiPlex