They used to have modem and router separate, the one problem we had was that the modem packed up, so we were given the new combo foc. I actually connected it to the old router as it provides a little better signal I believe. Maybe it's because it actually has a short aerial unlike the combo with it's built-in aerial. But even the combo wasn't bad tbh. The main difference I noticed compared to BT was that the speed is a lot more stable throughout the day with Virgin, BT was almost unusable during peak times.