If wifi discs need to be connected via ethernet cable, why do bt only supply a 1 metre cable

[licquorice]

The black discs don't, the white discs do.

[Kodikid · Accepted solution]

The black discs need to be connected to the smart hub two during the unbelievably simple set up process hence the cable. 

Once setup they are completely wireless and you can place them whenever you like.