4G/5G USB Modem
Before connecting to the internet via a USB modem, you first need to establish a connection using the regular method—either through Ethernet or WiFi—and then enable the Tailscale VPN, as described earlier in the section “Built-in VPN from Tailscale”. This is because when connecting via a mobile network, your IP address is assigned dynamically. Without a VPN, you won't be able to access your own base station through the mobile internet.
Connecting the Modem
Insert the SIM card into the modem and connect the modem to the USB Type-A port on the base station. You can plug the modem directly into the port on the base station, but for better mobile signal reception, it’s recommended to place the modem closer to a window. Therefore, it’s best to use a USB extension cable to connect the modem.
About a minute after powering on the modem, internet access will be established and the modem will begin functioning. At this point, the Ethernet or WiFi connection can be disconnected.
Modem Configuration
To check or modify the modem’s settings, go to the Settings page—or refresh it if it’s already open. At the bottom of the page, you’ll see a button labeled “Modem Web Server”. Clicking this will open the modem’s configuration web-page, where you can update the firmware or adjust modem settings.
