Some revision 3 kits have engineering samples ATMEGA328PB-MURES mounted in
the location of U200. All newer revision kits have nonengineering samples
ATMEGA328PB-MUR mounted.
- Non Engineering Samples
- Kits with serial number 0200001912 and larger have nonengineering
sample devices mounted (ATMEGA328PB-MUR).
- Engineering Samples
- Kits with a serial number lower than 0200001912 have engineering
sample devices mounted (ATMEGA328PB-MURES).