Lets say, you want to see your fcs2 is single port or dual port in aix, then use below command.
#lsslot -c pci |grep -i fcs2

Example:

testlab:/ # lsslot -c pci |grep -i fcs2
U7879.001.DQDNGRX-P1-C4 PCI-X capable, 64 bit, 133MHz slot fcs2 fcs3
testlab:/ #

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