Legrand UPS units that protect computers and network equipment from power cuts: the KEOR SPX line-interactive range in 600, 800, 1000, 1500 and 2000VA, and the KEOR DC Mini, a small UPS that keeps your router and modem online when the power drops.

To size a UPS, add up the power draw of everything you will connect and leave some headroom rather than choosing an exact match.