BT WHW (not mini, not premium, not black) and extra disc linked via ethernet?

[engelbertink]

BT internet smart hub 2

6x BT WHW large white discs

Master BT WHW disc (#1) ethernet cable linked to router. BT WHW discs #2-3-4-5 connected wirelessly to master disc.

Can I run a 75 meter ethernet cable from router port via gigabit switch to my out of reach BT WHW disc #6?

what are my challenges??

[Les-Gibson]

See here https://www.bt.com/help/user-guides/bt-whole-home-wi-fi-faqs---set-up-and-installation