G drive mobile and WD My passport internal connections?

can someone tell me if the G-Technology G-Drive mobile USB-C and the 2017 version with USB 3.0
( 2 TB ) has a seperate sata bus connections internal that i can replace if te hard drive fails? so i can save the data…

and what about the other drives like the WD my passport and Wd my passport Ultra (2017)?

do they also have that?

i need to know before i buy a new hard drive.

thank you