No, you cannot just just mount them in another NAS of a different model/brand. You can move them to another NV+V1 (yes, I know you said yours is "V3", but that's not how we designate it here, as there is a "V2" that was released after yours and is completely different). Basically, any unit that looks like yours (silver with internal PSU).
If you know what you are doing, you can mount them in any Linux system (including a NAS) that has MDADM and LVM installed and mount the volume there.
You can put them in a PC (including using USB caddies) and use r-studio or similar software. Windows will not be able to read the drives directly, and Linux Subsystem for Windows just isn't yet up to the task, but r-studio and some other products will.
If you have an available ATX power supply, you can also make an adapter cable to use that supply externally to power the NAS long enough to recover the data. Note that while the power connector looks like a standard 20-pin ATX, it's wired differently -- which is why you need the adapter.
@Sandshark Thanks, for responding. I may go with trying to get a similar unit? First.
I found a guy selling a second-hand one, the only difference was it had a power switch on the back PSU? Which made me wonder if it was modified. The seller didn't know as he was given it by his work years ago.
Failing that I could try the other routes you mention, I did something similar when I created a Linux boot drive to recover a single disk for a friend of mine. Though I will have to source some parts, as I have had several clearouts over the years and have literally nothing lying around.
I believe some were manufactured with rear switches. I honestly don't remember if any of mine did, but there are more than one on eBay that have them, and it's clearly not some modification hack. Netgear may have had two different suppliers. Or maybe the switch, or lack of one, is the difference on one of the three hardware versions.
Firefox 78.9.0esr release appears not to work for me? I did consider a new power supply, but it was cheaper for me (half the price) to buy a second-hand Ready NAS, also not knowing if it was only the power supply that was the only issue, I didn't want to waste money.
