It can be connected to a PC via SATA once you remove it from the MY CLOUD case.
However, took me a bit more reading. Those HD are formatted XFS as with Unix or Linux as system.
Connecting it to, and mounting the drive under Linux, the drive would be directly readable.
I went ahead and purchased a recovery package which, under one of three of licenses you can purchase, can read the XFS drive directly. Let it scan the drive, it will populate a directory with found files. From there just copy as normal over to a FAT32 Driver in the PC. There is also a license for Mac as well. It was $20 US a license, from a place in the UK. There is a trial mode to see first if indeed it will work for you. Was a breeze here.
It was mentioned here, so that's the reason I chose it. Raise Data Recovery.
Good Luck!