1. 8638 Series Card Selection 
1) Select a card for host PCIe slot, or host PXIe peripheral slot:

2) Select a card for slave controller slot:

2. Connection topology
1) Host is a PC and have no daisy chain:




2) Host is a PC and have daisy chain:




3) Host is a PXIe system and have no daisy chain:



4) Host is a PXIe system and have daisy chain: