True for the router, but some/all fiber service also requires an Optical Network Terminal (sometimes in your dwelling, sometimes outside). That belongs to the I

True for the router, but some/all fiber service also requires an Optical Network Terminal (sometimes in your dwelling, sometimes outside). That belongs to the ISP and cannot be replaced with your own unit AFAIK. There's no rental fee, but if it fails, you'll have to deal with the ISP to repair your service.