Here’s the math that sold me. A power cut of five seconds drops your router, and your router then takes five minutes to boot, reacquire the line, and hand you the internet back. A blink costs you a coffee break — and, if you were mid- game, a ranked match of Valorant you can’t rejoin in time.
A small UPS for the router turns that whole failure mode off. The lights flicker, your devices don’t even notice, and the connection never drops. It’s the rare upgrade where the cheap fix and the right fix are the same thing.
You don’t need a big one. The router and the ONT sip power, so even an entry- level UPS holds them for far longer than any short outage lasts. Of everything on this page, this is the one I’d tell everyone to buy — it’s not exciting, it just quietly removes a problem you’d otherwise live with forever.