for Time Warner Cable customer in Socal : just get the cable modem upgrade to my system TWC be roll out the 50gb wideband option utilize the SBG6580 DOCSIS 3.0 modem . Works as modem and wireless n only , you will have to keep the old Arris modem for internet phone call . Installers note : Motorola SBG6580 come with the same 192.168.0.1 initial address as the DLINK wireless router . take the DLINK wireless dir-855 out of you system and use a dlink access point dap-1525 which have different initial address for programming set up of all you wireless need . im get 30gb down and 5gb up right now ...