9
Slot Type Slot 1, 2: 2 x PCI-E x16 (Gen4 x8 link) or 1 PCI-E x16 (Gen4 x16 link), FH, FL (CPU1)
Slot3: 1 x PCI-E x16 (Gen4 x16 link), FH, HL (CPU1)
or 1 x OCP3.0 Mezzanine slot (Gen4 x16 link) (CPU1)
Slot 4: 1 x PCI-E x8 (Gen4/Gen3 x8 link), FH, HL (CPU1)
Slot 5,6: 2 x PCI-E x16 (Gen4 x8 link) or 1 PCI-E x16 (Gen4 x16 link), FH, FL (CPU2)
Slot 7,8: 2 x PCI-E x16 (Gen4 x8 link) or 1 PCI-E x16 (Gen4 x16 link), FH, FL (CPU2)
Slot 9: 1 x PCI-E x16 (Gen4 x16 link), LP, HL (CPU2) Optional