A:Answer Hi.
This Box receives signal via Coaxial Cable and outputs it to an HDMI port. To record this box you would need an HDMI recording card. Most likely, due to content protection laws in place, Cable Services like xFinity really want to avoid customers recording shows. We are always here to help you and thanks for your comments.
Charles V. - Insignia Support
https://www.insigniaproducts.com/contact-us