My hub is downstairs and works well, but in my home office upstairs I have tried everything to get a stable fast wifi signal. Recently had a cable ran from the hub to my upstairs office. I thought for wifi items upstairs it would be good to have a second router plugged into the data point to give a strong wifi signal.
I did buy a TP-Link TL-WR841N 300Mbps Wireless N Cable Router, 4 Fast LAN Ports, but looking at the instructions I would have to change the hub to a modem, which I assume I lose all wifi capabilities of the hub
Yes, but you don't need a second router, just use a cheaper WiFi Access Point. I use a ethernet cable to a tp-link AC1750 Wi-Fi Range Extender In Access Point Mode. You need to use the same SSID and password as the Virgin Hub 3. It helps a lot in boosting the wifi upstairs.