It is occasionally available on driver repository websites (e.g., TousLesDrivers), as it is no longer hosted on the main Western Digital support site.

that may not show up automatically in modern operating systems. Drive Mapping

: If the software shows the drive name but not its capacity, the drive might be formatted in a file system (like HFS+ or APFS) that your current OS cannot read without additional drivers.

: Double-clicking a discovered device typically opens its internal management page in your web browser. Western Digital Critical Compatibility Notes