NETGEAR Spare Power Supply Unit for Readynas Nv & Nv+ The input voltage range is 100 V AC to 240 V AC This is a Netgear spare/replacement 100-240VAC 50/60Hz auto-ranging Power Supply Unit for ReadyNAS NV+ Desktop Network Storage Devices. Compatibility with Netgear Infrant ReadyNAS NV NAS Appliance and Netgear Infrant ReadyNAS NV+ NAS Appliance