https://www.systerra.de/PCS-BALLET.html
Available as a mezzanine add-on expansion board (aka side board) to the PC1-GROOVE, SC1-ALLEGRO and successor CompactPCI® PlusIO and CompactPCI® Serial CPU cards, the PCS-BALLET provides a number of frequently required I/O functions. In addition, the user can choose between several SATA based on-board mass storage solutions...
https://www.systerra.de/PCU-UPTEMPO.html
Available as a mezzanine add-on expansion board (aka side board) to the PC6-TANGO and successor low power CompactPCI® PlusIO CPU carrier cards, the PCU-UPTEMPO provides additional I/O functions available via front panel connectors. Some interfaces are also available as an option via rear I/O. The PCU-UPTEMPO can be equipped with two M.2 style SATA 6G SSD modules, up to the 22110 format, for rugged mass storage needs...
PCS-BALLET Datasheet (PDF)
https://www.systerra.de/downloads.php?dokument=9626
PCU-UPTEMPO Datasheet (PDF)
https://www.systerra.de/downloads.php?dokument=9630