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NV
1 TopicInexpensive power supply replacement for legacy 4-bay Readynases
This was posted as a reply to another message, but is reposted here for easier searching. I have now confirmed that a mini-ITX, aka Flex ATX, supply will work as a replcement for the NV, NV+ (v1), NVX, Ultra 4, and Ultra 4 Plus, and I assume Pro 4. Be attentive of the amount of +12V supplied, as it needs to be at least 7A to meet the spec of the original. The 250W supply I got provides 13A, and I wuld expect all 220 or 250W supplies would have enough. One 150W one I saw advertised had only 5A. The connector has to be re-wired per the diagram here: http://www.readynas.com/download/archive/pdf/ReadyNAS_PSU_pinout.pdf. One way to do that is to remove the two pins that are changed to +12V and replace them with the +12V from the 4-pin CPU connector. They are the same type of pin. On mine, the cables are the same length, too. If you have trouble removing them (there is a special tool that makes it easier), you could cut and splice, but that will void the power supply warranty. Either put the removed pins into the 4-pin connector or cover with shrink tubing to prevent them from shorting to the case You will also need to rig up a way to install the air deflector. Some good aluminum tape ought to do it. The vent holes in the one I got are not very large, so I would not recommend removing the fan unless you are willing to take it apart and drill a lot of extra holes in it. Being only a 40mm fan, it has a rather high pitch when fully spun up, but the one I got does have automatic speed control. The orignal Infrant NV I have shipped with a power supply with fan, and it could get a bit annoying. But since many are relegating their older units to backup that only powers up when needed, it would be tolerable unless in a bedroom or something. I have seen these supplies new on eBay for around $30 and elsewhere for a bit more to a lot more.Solved
