https://www.systerra.de/PEX430.html
PEX430 allows designers to build complex VPX systems with multiple single board computers and multiple I/O modules. It provides both a PCI Express switch and a mezzanine carrier ...
https://www.systerra.de/PEX442.html
The PEX442 Mezzanine Carrier Card allows designers the flexibility to extend and expand the IO capability of their systems by supporting high bandwidth links to combinations of XMC’s, PMC’s and AFIX ...
PEX430 Datasheet (PDF)
https://www.systerra.de/downloads.php?dokument=5596
PEX442 (PDF)
https://www.systerra.de/downloads.php?dokument=5601
SBC326 Datasheet (PDF)
https://www.systerra.de/downloads.php?dokument=5634