Connect to wifi via TP-Link adapter

After the installaion I received this notice:

Your system has UEFI Secure Boot enabled. │
│ │
│ UEFI Secure Boot requires additional configuration to work with third-party drivers. │
│ │
│ The system will assist you in configuring UEFI Secure Boot. To permit the use of third-party drivers, a new │
│ Machine-Owner Key (MOK) has been generated. This key now needs to be enrolled in your system’s firmware. │
│ │
│ To ensure that this change is being made by you as an authorized user, and not by an attacker, you must choose │
│ a password now and then confirm the change after reboot using the same password, in both the “Enroll MOK” and │
│ “Change Secure Boot state” menus that will be presented to you when this system reboots. │
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│ If you proceed but do not confirm the password upon reboot, Ubuntu will still be able to boot on your system │
│ but any hardware that requires third-party drivers to work correctly may not be usable. │
│

What does this mean?