@WorldClassAccident
You can run the Decos in either Access Point (AP) mode or Router mode.
In AP mode you would keep your existing router but you would turn off it’s wireless function. You would then connect one of the decos to the router via ethernet. The rest of the decos can be connected either wirelessly or via ethernet in any combination – it’s very flexible. Some can be wirelessly connected and some can be ethernet’d up – think of a wireless bridge between two units with the rest connected via ethernet (maybe if you had a tricky gap you couldn’t run any cable). The decos now act purely as wireless clients that your devices connect to with the existing router acting as the the main hub so to speak. You can also connect devices via the deco’s ethernet ports if you desire.
In router mode you would get rid of your current router and then one of the deco’s becomes the ‘main’ unit which becomes the router of your network. You then connect up the rest of the decos in the same manner as before.
I choose to run my decos in AP mode which allows me to keep the BT home hub as the router. This stops BT thinking that the router is down and potentially throttling speeds. Don’t know if that would actually happen but it also allows BT to run any diagnostics check on my service if we ever have any issues. Something they wouldn’t be able to do if we weren’t using their router.
I really reccomend getting these decos. Been bullet proof. I do have them all backhauled via ethernet though so ymmv if you had to have them connected wirelessly.