Can't select my external speakers in Cubase

hi there,

when I open groove agent, I can select the desired speakers. when I open Cubase 8.5 pro, I can’t select them.

I’ve installed Asio4all, and I can only select Asio4all as my driver in cubase. in groove agent I can select asio4all and generic low asio driver (which is connected to my external speakers)

anyone knows what to do?