Did you try a 2060-771672-004 board? That's what most SATA version Mariner family drives seem to use. I know I've swapped a couple, but I don't have notes on exactly which board I used.
You might find that it helps to actually buy a SATA drive from that family and try using the PCB from that...
Now it's time to use data recovery software on that clone. There's file system damage, so you can't just expect it to mount like it's perfectly healthy.
Welcome! Just start working on those bad drives, and when you get stuck, post what you've tried here and we'll try to help you through the next steps. MRT is a bit more challenging to work with compared to PC-3000, but you can still do a lot.
You've now cloned over 98% of the data, so that's good. But, you've still got close to 20Gb it needs to try to clean up. I'd let it keep running a bit longer if it were me. Keep an eye on the "time since last successful read:" time. 16s isn't bad, which means it's still reading some sectors...
Then step one is to make a sector by sector clone of the drive. There's a guide to using ddrescue in the tutorials section of this forum.
don't do that under any circumstance
A drive suddenly going RAW could be a sign of failing hardware, so cloning first will help to determine if that's a...
NAS is file-level storage. PC-3000 requires block-level storage. The only way it'll play nice with a network device is probably to use it as an iSCSI target and allow for block-level access.
I don't know if your NAS supports creating iSCSI targets. The more expensive ones usually do.
This...
Do not even consider using chkdsk, that's one of the dumbest things on earth you could attempt.
You sent screenshots of device manager. That's not what I'd said. Open up COMPUTER MANAGEMENT > STORAGE > DISK MANAGEMENT and grab a screenshot of that.
It looks like this:
First off, you don't need any drivers for those adapters. It's been a standard driver for mass storage for a couple of decades now, so Windows natively works with it.
What OS was the original computer using? Was any encryption employed? Are you sure your current OS is configured to...