How to configure static IP for Home Duo?

The probliem is that my network has no DHCP. In an other network with DHCP there is no problem to see the NAS but there is no posibility to configure a static IP, I was searching but I cannot find any posiblity to configure a static IP. I know the ip adress in a network with dhcp but when I try to open this ip in a browser I only can see an error page, WTF!!! Does anybody knows how to configure a static IP for a Home Duo?

Apparently, you can’t.

https://support.wdc.com/knowledgebase/answer.aspx?ID=20555