How do I change my preset Network Key (Password)?

The WiFi password can be set by using a web browser to connect to the Orbi, usually at 192.168.1.1.  On the "Basic" tab, select "Wireless" and the WiFi password is toward the bottom of the screen.  Most people also change the Administrative Password from "password". That is on the "Advanced" tab, select "Set Password".  This is also the place where you can input challenge questions that can be used to unlock the password if you forget exactly what it is (every character has match upper/lower case, etc.)

 

Was this what you wanted?

There is support for the Orbi WiFi System, including a manual, somewhere at the end of this link:

 

>>>> Orbi RBK50 | WiFi System | NETGEAR Support <<<<

 

See the section Change the WiFi Password or Security Level.