Has anybody got any advice/recommendation for which mini connectors to use please. I'm looking to add extras around the house.
Welcome to this user forum.
The BT Hotspot 600 works very well and is not expensive.
It may be worth paying a bit extra for the one with two additional hotspots.
Do not attempt to use the option on them, to clone the home hub settings, as it caused lots of problems.
Just connect to the new SSID that they generate. They also give you two Ethernet connections as well.