Should work with the following models (no guarantee). The item "QNAP SP-469U-S-PSU 250W Single Power Supply Unit for 1U 4-Bay Rackmount NAS/NVR" is in sale since Monday, April 22, 2019. This item is in the category "Computers/Tablets & Networking\Printers, Scanners & Supplies\Printer & Scanner Parts & Accs\Power Supplies". The seller is "joe94920" and is located in Larkspur, California. This item can be shipped to United States.