Does Razer Synapse require an internet connection to function? Razer Synapse only requires an internet connection for initial setup and installation of the latest drivers; online and offline modes are optional. In online mode, Razer Synapse will save and sync user settings to the cloud in real time whenever there is an active internet connection. In offline mode, user settings are stored on the computer. Switching from offline to online mode will automatically save and sync user settings to the cloud; providing a seamless user experience.