This video shows the procedure for removal and replacement of the WLAN Card in your Latitude 7280.
Welcome to Dell tech support.
In this video, we'll go over the steps for performing a part replacement on your Dell PC. First, unscrew and remove the bottom base. Then, unscrew and disconnect the battery.
Now, unscrew and remove the bracket. Then, disconnect and remove the wireless card. Once replaced, your PC should be ready to be used again.