I'm not on Comcast but with my provider package, I stopped cable TV and just have Internet. This TV connects wirelessly to your home wireless internet for streaming TV. The ROKU apps are a breeze to use and the remote is simple and connected to my receiver flawlessly. If you need HDMI cables make sure to get HDMI with Ethernet cables for 4K. The mount may or may not work, depends on the mounting spacing. I'd recommend getting a new one that swivels out. Much easier to connect any cables. Have had this TV for 8 weeks and love it.