Basically, it is prepared for Windows, but if you connect it to a Mac, you can also format it for this and make it usable. In principle, there are no hard disks that are only for Windows or only for Mac.

https://www.macwelt.de/tipps...

It is suitable for both operating systems. The hard drive is formatted to NTFS (Windows) by default, but with the WD software it also works on MacOS.

Source: https://www.westerndigital.com/products...