As important as your router, a modem can be the difference between making the most of your internet connection or paying for unused bandwidth. DOCSIS stands for Data Over Cable Service Interface ...

However, a DOCSIS 3.1 modem may run you $100-$150. If you want extras such as a built-in router and maybe a USB port, you could be looking at $200-$300 or more. Best modem FAQ What is a cable modem?