System Block Diagram

Figure 5. System Block Diagram

System PCIe Lane Distribution

SYS-122H-TN PCIe Lane Distribution

CPU

Port

PCIe

Motherboard Connector

PCIe Lane Assignment

 CPU0

PE0

x8

JPCIE2A1

Not Used

x8

JPCIE2B1

Not Used

PE1

x81

M.2-C1 (x2), M.2-C2 (x2)

Internal 2x NVMe M.2 Slots

PE2

x16

JAIOM1

AIOM/OCP 3.0 NIC Slot A1

PE3

x16

JPCIE1

PCIe Expansion Slot 2

PE4

x8

P1_NVME0

Not Used

x8

P1_NVME1

Not Used

PE5

x8

P1_NVME2

NVMe Drive Bays 0,1

x8

P1_NVME3

NVMe Drive Bays 2,3

CPU1

PE0

x16

JPCIE5

PCIe Expansion Slot 1

PE1

x8

JPCIE3A1

Not Used

PE2

x8

JPCIE6A1

NVMe Drive Bays 4,5

x8

JPCIE6B1

NVMe Drive Bays 6,7

PE3

x8

JPCIE4A1

PCIe Expansion Slot 3

x8

JPCIE4B1

PE4

x8

P2_NVME0

NVMe Drive Bays 8,9

x8

P2_NVME1

Not Used

PE5

x8

P2_NVME2

Not Used

x8

P2_NVME3

NVMe Drive Bays 10,11

1Some PCIe lanes from this port are routed directly to onboard devices (USB controller & BMC)