In "Connected Devices > Range Extenders", what sort of range extenders are meant?
On my DPC3941 gateway's customer admin web interface, there's a "Connected Devices > Range Extenders" pane that says
"Manage the connected range extenders below, which were all auto-discovered by the Gateway.
You may choose to DISCONNECT, EDIT, or delete (X) the range extenders connected to your network.
There are no valid extender found!"
What kind of range extenders is it talking about? Can I get them from Comcast, or buy them outright?