am in linux now & do get a different model number (extension?):
/dev/sdd:
ATA device, with non-removable media
Model Number: WDC WD40EZRX-00SPEB0
Serial Number: WD-WCC
Firmware Revision: 80.00A80
Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
What does your latest SATA Rev show? Also, I do see that the “firmware” is still the same.
Then, the “model number” on the box is different to the internal model number which most likely is the drive itself & not the include the enclosure and/or software; I did see that WD has drives without software that is about $10 cheaper like what Seagate does.