[header] How to install a modem [title] Make sure that your modem will work with your internet subscription. [step] While rare, some modems encounter issues when paired with a specific internet company (e.g., comcast). Double-check your modem's compatibility with your current internet subscription before buying (if possible). 
[substeps] If you find that your modem won't work with your current subscription, try to exchange the modem for a different one that will work, or switch your internet subscription. [title] Find your room's cable output.