Hans,
1 This is the checklist I use when setting up networks:-
A consolidated network setup checklist for Windows 10 and 11 - my post #4 - TenForums
It has never failed me.
2 "I was surprised to see that Win 11 recommended public network"
You need a Private network because you want access between computers.
If you were using your network just to allow all your computers to access the internet then you could indeed use a Public network,
The labels can be misleading.
-
Public is a warning that the general public is also on the network [the internet].
-
Private means that you want it do private things, to access your various computers. Your router will handle the fact that the internet connection is a
Public-facing aspect of the
Private network.
3 I cannot tell you how to set up your router. There is no standard procedure for that so you'll have to use its manual and/or any useful guidance in its support website or user forum.
But, in summary, you are going to access the router's admin settings using the ethernet connection & the admin password you assigned it then
- choose a frequency band if you have a choice - 5GHz is generally better but use 2.4GHz if necessary and use both if you can
- assign its WiFi capability an "SSID" name for the 2.4GHz band and another for the 5GHz one then
- set a "security key" [password] for the 2.4GHz band and another for the 5GHz one then
- switch on the WiFi then
- connect to it from your new WiFi computer including
- - selecting the SSID from the list of available networks [neighbours, passing buses, ...] choosing the name for the 5GHz band if you can
- - putting in the security key
- - responding to the question that you do want to make it a "discoverable" network which is just another word for "Private".
4 I cannot tell you how to set up your printer. There is no standard procedure for that so you'll have to use its manual and/or any useful guidance in its support website or user forum.
- You have not mentioned how your printer is currently connected. If it is connected by ethernet cable to the router then there is no particular need to change it to use WiFi.
- If your printer has a WiFi network capability, it is very likely to be limited to 2.4Ghz which is why you might make use of the 2.4GHz in your network.
5 If you were able to set the router to use both a 5GHz and a 2.4GHz band WiFi network then the router will be able to manage the interaction between them & with ethernet connections.
- There will be no problem if your WiFi computer connects to the 5GHz band and your printer connects to the 2.4GHz one.
- Similarly, there is no problem with your old computer remaining on an ethernet connection
Best of luck,
Denis
PS
Why are you on Version 19042? I think that's out of support. Run the command
WinVer to check your Version.