snt_387,   I apologize it does appear it could be a FC, as the KHKN5 shows as (ASSY,CRD,RSR,PCIE,X16,FC,V6) Where the TKJJJ shows as (ASSY,CRD,RSR,PCIE,X16,FC630,V5)  
Hi, What is the difference between these two PCI-E passthru mezzanine cards: I need passthru mezzanine card to access PCI-E slots for NVMe on FC630 Thanks!    
FX2S PCI-E Mezzanine Card