A:AnswerSB6190 will provide support for 1 public IP address. So at a time only 1 device can be attached to the modem and obtain the public IP address. You can connect additional client devices to a 3rd party router which in turn will be connected to the SB6190 modem
A:AnswerThis is just a modem, it only has a single ethernet connection. You will need a separate router or wifi router. Most wifi routers will allow you to turn off wifi and just use the router.