You need to connect a power bank to the router? No problem! A power outage doesn't have to leave you without internet. Just take one or two power banks, a router, an ONU modem, and USB-DC cables. Connect one power bank to the modem, the other to the router, and enjoy the internet even when the power is out.
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As we can see, it's possible to have internet access even during a power outage, just by having a small 'backup power source' and connecting it correctly to the router and ONU modem. This method can help you avoid being cut off from the information space even in the most dangerous moments. So don't forget to consider this option in advance and be prepared for any unforeseen situations.