Asus AC-5300 with BGW 210-700 Setup as Router. It is not a big deal, you may connect an asus router with an arris modem. All you need to do is power up both the devices properly and ensure the fact you have handy ethernet cables. Use one to connect router and modem and another to connect asus AC5300 and the operating system. Now you may run router.asus.com and configure.