How to Transfer Nintendo Network Id to Another Wii U?

How to Transfer Content Between Two Wii U Consoles

On the source Wii U , select System Settings from the Wii U Menu.
Using the Left Stick, scroll to System Transfer and press the A Button.
Select Transfer Between Wii U Consoles.
Wait a moment while the Wii U checks for the latest system updates and data required for the transfer.

How do I Transfer my Nintendo Network ID?

From the HOME Menu tap the System Settings icon and then Open.
Tap Other Settings.
Tap 3 and then System Transfer.
Tap Transfer from a System in the Nintendo 3DS Family.
Read the information about the transfer and tap Agree.
Tap Send from This System.

Can I Link my Nintendo Account to Multiple Wii U?

A Nintendo Network ID can be linked to one Wii U and one system in the Nintendo 3DS family. It is not possible to link the same Nintendo Network account to multiple Wii U or multiple Nintendo 3DS family systems at the same time.

Can you Merge Nintendo Network ID?

No. We are not able to combine two different Nintendo Accounts together into one. Please note that you can link up to 8 Nintendo Accounts to a single Nintendo Switch console. Games that youve purchased are playable by everyone on the active Nintendo Switch console for your Nintendo Account.