[Q] What is left of my original tablet? topic

This question is not about the TF300T but about the ME301T, quite similar but cheaper and without dock.

I had my tablet in RMA. This was changed to new hardware:
* Touchscreen
* Display
* Battery
* Mainboard

Question:
What is left of my original tablet? What was not repaired (changed) in RMA?
The back plate, there are some scratches like before RMA.