Using your ARRIS Surfboard S33 cable modem is a breeze. First, plug in the device to get it powered up. Then, head to your app store and download the SURFboard Central App. Open the app and follow the on - screen instructions to activate the modem. After that, connect it to a Wi - Fi router to start enjoying the network. When it comes to compatibility, make sure to check your Internet Service Provider's website to confirm that the modem works with your service plan. As for maintenance, keep the modem in a well - ventilated area to prevent overheating. Regularly check the cables for any signs of damage. If you face any issues, you can always refer back to the app or contact your ISP for support.