PCIe slot priority 
Table 33. Supported expansion options
Riser Form factor Slot CPU mapping Slot width Maximum power 
consumption
PCIe Slot (slot 4) Low prole 1 CPU1 Skylake or 
Skylake-Fabric
PCIe Gen3 x16 (x16 
connector)
75 W
Mezzanine slot (slot 
1)
Mezzanine 1 CPU1 Skylake or 
Skylake-Fabric
PCIe Gen3 x8 
(through Bridge 
Board)
25 W
Open Computing 
Project (OCP) 
mezzanine slot (slot 
3)
or
OCP mezzanine slot 
(slot 3)
Mezzanine 1 CPU1 Skylake or 
Skylake-Fabric
PCIe Gen3 x16 25 W
Mezzanine 1 CPU1 Skylake-Fabric OCP MEZZ will be 
occupied by SKL-F 
QSFP carrier card
25 W
Riser slot (SATA M.2) 
(slot 5)
Low prole 1 CPU2 Skylake or 
Skylake-Fabric
PCIe connector data 
lanes not used for M.
2 SATA Riser
25 W
NOTE: For the expansion bus specication see the Expansion bus specications.
Table 34. Supported expansion cards
Location Card type Form factor Link width Slot priority Maximum number of 
cards
OCP (slot 3) Intel CNA X710 - 
Dual Port Adapter
Mezzanine x8 2 1
Mezzanine (slot 1) Dell PERC9 H730 
Adapter
Mezzanine x8 1 1
Mezzanine (slot 1) Dell PERC9 H330 
Adapter
Mezzanine x8 1 1
Mezzanine (slot 1) Dell HBA H330 mini 
Adapter
Mezzanine x8 1 1
Slot 4 Dell SAS 12 GB HBA 
external Adapter
Low prole x8 4 1
Slot 5 SATA M.2 Low prole x16 4 1
Slot 4 Mellanox 
ConnectX-4 Dual 
Port VPI EDR QSFP+ 
Adapter
Low prole x16 4 1
Slot 4 Mellanox 
ConnectX-3 Dual 
Low prole x16 4 1
Installing and removing system components 93