Hi, you can add as many computers as you like with no charge. Just hook it up to the router in any of the ports on the back (1 - 4) or make sure you have a wireless card in that computer if you are going to connect wirelessly.
~~ "It's not a bug. It's an undocumented feature."
Is there an additional charge for adding a second computer to my FIOS internet service?
No additional charge if you make the connection to the router yourself, as stated in the other post. But if you need Verizon to come out and run cable for you, there is a minimum truck roll charge of about $80. It would be cheaper to run the connection yourself if possible, or possibly get an electrician to do it. You can connect as many computers as you like, but the router only has 4 connections. If you use wireless, you may or may not be able to take full advantage of the FIOS speed and reliability.