HDMI cables provide you with the added advantage of supporting both HD video, as well as audio which legacy connections were not capable of providing. He received his undergraduate degree from Boston College, where he worked on the campus newspaper The Heights, and then attended the Columbia University school of Journalism. Make sure that your HDMI port is set to the right input method. That's one reason why it's giving the Xfinity Flex streaming box to its Internet-only customers for free. Sorry, there is insufficient stock for your cart. Note: The ARC port can be used if no other ports are available. One is an HDMI Input, which you can use to host another video source chances are you will never use this port. On another TV, my ROKU stick does not show any home option for cable box so I have to manually go to new input. Thanks to all authors for creating a page that has been read 607,345 times. By using our site, you agree to our. With so much to connect and so little time, we all need some kind of guide to help us figure it all out. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. - Related Questions You should only receive cable TV boxes directly from Comcast. Some soundbars or surround sound systems use Audio Return Channel technology or ARC for short. All cable boxes are property of Comcast, and all used cable boxes available for sale are unauthorized. Flex also has both of the new streaming services on the block: HBO Max (which Roku and Fire TV still don't have) and Peacock, which it got months before everyone else. Using the remote, navigate toSettings. Manufacturer support & warranty resources, Roku Express Setup finds wireless network, signs in, performs update, reboots and goes back to setup. The cookie is used to store the user consent for the cookies in the category "Analytics". Hulu also took a little extra time to get to the Flex, but it's there now. From there, change the option to Last Input and the TV will always go to the last input that was used when it is turned on. Once all cables are connected, you are done behind the TV. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c1\/Activate-a-Comcast-Cable-Box-Step-1-Version-2.jpg\/v4-460px-Activate-a-Comcast-Cable-Box-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/c\/c1\/Activate-a-Comcast-Cable-Box-Step-1-Version-2.jpg\/aid1641067-v4-728px-Activate-a-Comcast-Cable-Box-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"