The ASUSTek Wifi USB adapter works fine once plugged into a laptop running Debian 9.3
Setting up its networking configuration is straightforward using iw, ip link and dhclient.
Although this new device is recognized by NetworkManager, its configuration failed and the process gets stuck at :
It looks like that NetworkManager does not like wireless interfaces with
This issue has been already encountered :
Here is their workaround :
ln -s /dev/null /etc/systemd/network/99-default.link
Unplug-plug your USB dongle and NetworkManager should be working fine.