The beast my ISP sends out says 5w power save (when does that activate when something is always connected?), 18w typical and 36w max (probably with usb devices

The beast my ISP sends out says 5w power save (when does that activate when something is always connected?), 18w typical and 36w max (probably with usb devices plugged in). https://www.192-168-0-1login.org/datasheet_6208_coda-4582.pdf https://www.192-168-0-1login.org/datasheet_6208_coda-4582.pd...