The basic minimum is a modem, that receives the internet at the location, and a router, that sends the signal further from that point by issuingthe Wi-Fi signal. Optimum also offers the integrated wireless gateway that combines the modem and router within one piece of equipment. If the area where you wish to use the Wi-Fi is large, or there are nooks and crannies that need to be covered, you can also add on the wi-fi extenders. Pricing: Standard DOCSIS modem and a smart router: $10 per month Wireless gateway: $10 per month Wi-Fi extender (each): $3 per month Additional modems: $49.95 one-time fee each You also have the option of gettingyour own equipment if the math works better that way for you. However, please ensure they are compatible with the Optimum service.