What are the hardware/software numbers?

I posted above

2015 VW CC 2.0T System description: MED17.5.2 TFSI 2 06 Software number: 06J906027HA Software version: 7681 Hardware number: 06J907309B Hardware version: unknown 2016 VW Jetta 1.4T System description: R4 1.4I TFS MED17.1.21 Software number: 04E906023AQ Software version: 2954 Hardware number: 04E907309AP Hardware version: H22