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Power supply replacement Ultra 4
I've had a Ultra 4 stored unused for the last few years. When connecting it to power today, the power supply died violently( blowing my 16A circuit breaker for the room).
I took the power supply out, it's a "FSP060-40LE" 60W fanless unit.
When I saw the connection bein a standard 20 pin, I connected a 500W ATX power supply I had lying around, and the Ultra 4 booted normally.
Searching for a replacement power supply that would fit inside the cabinet I found some previous threads saying that the atx connector should be wired differently..
Is there different hardware versions for the Ultra4? The model no is RNDU400-100PES, TA 100-15335-01R8
My main question is, can I run it with the ATX power supply, insert some spare disks and use it for temporary data migration as intended, or do i risk the whole unit failing on me now?
If it's just to migrate the data, I recommend you buy an ATX power extender and just clip the -5V and -12V lines. Or, if the supply is "expendable", just clip the wires directly. Your unit will probably run fine on a standard ATX supply without the extra +12V long enough for you to extract the data. Of course, you may have already killed the -5V and -12V on that supply by mating them with +12V in the NAS.
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ReadyNAS Ultra 4 PSU is modified FSP120-40LE. The pinout is different from standard ATX PSU where -12V and -5V are used for 12V.
Unless your PSU does not output -12V/-5V, a standard PSU can’t be used.
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If it's just to migrate the data, I recommend you buy an ATX power extender and just clip the -5V and -12V lines. Or, if the supply is "expendable", just clip the wires directly. Your unit will probably run fine on a standard ATX supply without the extra +12V long enough for you to extract the data. Of course, you may have already killed the -5V and -12V on that supply by mating them with +12V in the NAS.
Hi, thanks for the advice, I have an atx extender cable on order, so will modify that when it arrives and power up again..
I guess I'll have to see what happened to my power supply, it doesn't have any -5V as pin 18 is unused on newer ATX power supplies, so it's the -12V that may be the issue.
The important bit is that my Ultra 4 mainboard should be ok?, even though I connected the ATX supply before I knew the wiring was modified..
I see the comment above about FSP120-40LE, the original power suplly on my Ultra 4 is an FSP060-40LE, 60W, but the wiring does indeed match the pinout with regards to colours..
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