Interchangeable Circuit Board for same drive

WD Internal Drives Desktop & Mobile Drives
1

I’ve heard that circuit boards for WD Drives are not interchangeable on the same models of drives.

Is that true?

Thanks!

2

yes, that’s true.  I’ve been told that they tune them as they come off the line, in order to maximize their function.

3

True that, I try it and guess what…EPIC FAIL…