Dell PowerEdge C6220 II - Manual (Page 193)

Removing and Installing System Components | 193
PCI-E Slot Priority
1. The C6220 II system board is designed with only one mezzanine card
slot, which is PCI-E Gen 3 x8 mezzanine slot 3, so there is no priority
concern.
2. Since the C6220 II system board can be assembled onto the 1U system-
board tray or 2U system-board tray, follow the slot priority below:
For the system with 1U C6220 II system-board assembly, only one PCI-
E card can be installed in the PCI-E Gen3x16 slot 1.
For the system with 2U C6220 II system-board assembly, follow the
rules below:
A) One RAID card: the RAID card must be installed in the PCI-E
Gen3 x16 slot 2.
B) One RAID card and one NIC /HIC card: the NIC/HIC card must
be installed in the PCI-E Gen3 x16 slot 1, and the RAID card must
be installed in the PCI-E Gen3 x16 slot 2.
C) Two NIC cards: for easier assembly, it is recommended to install
the card in the PCI-E Gen3 x16 slots 1 first.
D) Two RAID cards: the Internal RAID/HBA card must be installed in
the PCI-E Gen3 x16 slot 2, and the external RAID/Ext. HBA card
must be installed in the PCI-E Gen3 x16 slot 1.