The team does not officially support running SABnzbd on NAS devices.
Several people have managed to get SABnzbd running on NAS devices.
It's a bit of a challenge because you need to install many packages yourself, often requiring compilation from sources.
Also NAS devices tend to have slow processors and especially low amounts of memory.
Never the less, running SABnzbd on a NAS does have advantages.
We have come across these tutorials on the Web: