I am just about to setup my m4 system. I have a virgin media hub in modem mode with a tp link router attached as the virgin router is rubbish for WiFi and the tp link is much better. My question is can I still use this setup and plug the deco into the TPLink router or will I have to reset the virgin box back to factory settings and the plug in my deco into the virgin box taking out the TPLink router all together. I have lots of WiFi dead spots in my house hence buying the deco system. Many thanks in advance people.