This wifi adapter is not supported by the kernel. The driver is not even in upstream linux.
You can try the driver from https://github.com/kelebek333/rtl8188fu. There is a DKMS package available but it fails to compile: $ sudo add-apt-repository ppa:kelebek333/kablosuz $ sudo apt install linux-headers-raspi rtl8188fu-dkms ... Building for 5.4.0-1053-raspi Building initial module for 5.4.0-1053-raspi Error! Bad return status for module build on kernel: 5.4.0-1053-raspi (aarch64) Consult /var/lib/dkms/rtl8188fu/4.3.23.6~ppa/build/make.log for more information. dpkg: error processing package rtl8188fu-dkms (--configure): installed rtl8188fu-dkms package post-installation script subprocess returned error exit status 10 Errors were encountered while processing: rtl8188fu-dkms E: Sub-process /usr/bin/dpkg returned an error code (1) The Makefile seems to be broken. After the above, you can compile the driver like so: $ sudo ARCH=arm64 dkms build rtl8188fu/4.3.23.6~ppa Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area... 'make' all KVER=5.4.0-1053-raspi........................................................................ cleaning build area... DKMS: build completed. And then install it: $ sudo ARCH=arm64 dkms install rtl8188fu/4.3.23.6~ppa rtl8188fu.ko: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/5.4.0-1053-raspi/updates/dkms/ depmod....... DKMS: install completed. The load the driver: $ sudo modprobe rtl8188fu ** Changed in: linux-raspi (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1961395 Title: I am using ZEB-USB150WF1 for external wifi adapter in raspberry pi with Ubuntu server but I am not finding the adpater. It should show wlan1 for external adapter. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1961395/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs