Of course they are not.
The image is of the CSMU, the memory module. The 'text' P/N and S/N is from the FDR chassis on which the CSMU was mounted.
If you right ... this is odd to the BEA to publish a image and a legend not corresponding ....
That's not serious ...
EDITED
And you no right !
For the FDR, only the protected unit (CSMU or memory module) was present. The CVR was
complete.
Flight Data Recorder - FDR
Manufacturer: Honeywell
Model: 4700
Part number (P/N): 980-4700-042
Serial number (S/N): 11469