Is your original QNAP NAS power supply acting up or lost? Get back up and running with this high-quality replacement AC adapter. It's specifically designed to work with QNAP TS-451+ and TS-451A 4-bay NAS models (including the TS-451A-2G-US and TS-451A-4G-US versions). This isn't some sketchy knock-off – it's brand new, built with quality materials, and tested to safely meet the power needs of your device. It converts your standard wall outlet AC power (from 100V to 240V, so it works worldwide!) into the stable DC power your NAS needs. The cord is a generous 10 feet long, giving you plenty of reach. It also has built-in protections against over-voltage and overheating for peace of mind. Keep your important files accessible and your NAS running smoothly with this reliable, tested replacement power supply from Onerbl.