Choosing UPS for Synology DS1522+

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I would look at CyberPower VALUE 600EILCD . This is a budget option. You need to have a USB data (not charging) port to communicate with a NAS. Otherwise, it will protect against power loss, but it will never shut down the NAS. We have few other models listed here https://nascompares.com/cheapest-ups-for...-qnap-nas/

I hope this helps.