Difference between similar model numbers? 04 vs nesn

Portable Drives My Passport
1

What is the difference between wdbfjk0030hbk-04 and wdbfjk0030hbk-nesn?

2

NESN is the region / type code eg N = Pan America / E = External / SN = Standard

04 probably means the same thing ? or batch number / product number ? i dunno

But, comparing both with the chart below … i’d say they are the same.

found this as well … where 04 is an Order Number