Linksys WUSB6300 802.11a/b/g/n/ac Wireless Adapter Realtek RTL8812AU on UBUNTU 20.04 install.

Hello to all, thanks in anticipation,

$ uname -r
5.4.0-31-generic
$

$ lsusb
...
Bus 006 Device 004: ID 13b1:003f Linksys WUSB6300 802.11a/b/g/n/ac Wireless Adapter [Realtek RTL8812AU]
...
$

Events:
- Attempted to make work above named wifi device/USB3 dongle on the newly 20.04 Ubuntu install
- Procedure followed as the one successfully used sometime back on 16.04 Ubuntu
- Listed below for your perusal are listed all commands and outputs used:

$ sudo apt-get update
[sudo] password for peter:
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://archive.canonical.com/ubuntu focal InRelease
Get:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease [107 kB]
Get:4 http://archive.ubuntu.com/ubuntu focal-backports InRelease [98.3 kB]
Get:5 http://archive.ubuntu.com/ubuntu focal-security InRelease [107 kB]
Get:6 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [90.3 kB]
Get:7 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [136 kB]
Get:8 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 DEP-11 Metadata [528 B]
Get:9 http://archive.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [16.6 kB]
Get:10 http://archive.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [208 B]
Fetched 556 kB in 3s (176 kB/s)
Reading package lists... Done
$

$ dpkg -L rtl8812au-dkms
dpkg-query: package 'rtl8812au-dkms' is not installed
Use dpkg --contents (= dpkg-deb --contents) to list archive files contents.
$

$ sudo apt-get install rtl8812au-dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  rtl8812au-dkms
0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
Need to get 0 B/1,116 kB of archives.
After this operation, 8,907 kB of additional disk space will be used.
Selecting previously unselected package rtl8812au-dkms.
(Reading database ... 193802 files and directories currently installed.)
Preparing to unpack .../rtl8812au-dkms_4.3.8.12175.20140902+dfsg-0ubuntu12_all.deb ...
Unpacking rtl8812au-dkms (4.3.8.12175.20140902+dfsg-0ubuntu12) ...
Setting up rtl8812au-dkms (4.3.8.12175.20140902+dfsg-0ubuntu12) ...
Loading new rtl8812au-4.3.8.12175.20140902+dfsg DKMS files...
Building for 5.4.0-31-generic
Building initial module for 5.4.0-31-generic
Done.

8812au.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/5.4.0-31-generic/updates/dkms/

depmod...

DKMS: install completed.
$

-Result - unfortunately the named device still does not do its job so far, no pinging, no show in Settings, no lights/activity.

Your advise/help is deeply appreciated in getting the device up and running. Thank you.

PS - Currently using

lsusb
$
Bus 006 Device 005: ID 13b1:003b Linksys AE3000 802.11abgn (3x3) Wireless Adapter [Ralink RT3573]
$

to connect, sent this question.