The instructions @ericklan posted are on the right track, though they aren't quite clear to me and seem to recommend more than is necessary....
For Debian 10 wireless intel 8260, Method To install the wifi for the Intel Corporation Wireless 8260 , download the driver from here, extract it then...
In the event that something bad happens and you need to restore your WordPress blog from this backup, you could extract the files and replace what you currently have, then import the SQL file into MySQL. This is a full snapshot, not an incremental backup. Conclusion