Lenovo ThinkSystem SR650 V2 Maintenance Manual page 134

CFF expander + 8i RAID/HBA adapter + retimer card
The following shows the cable connections for the 16 x 2.5-inch SAS/SATA + 8 x 2.5-inch NVMe
configuration with one CFF expander, one 8i RAID/HBA adapter, and one retimer card.
From
Backplane 1: SAS
Backplane 2: SAS
CFF expander: RAID/HBA
CFF expander: PWR
Backplane 3: NVMe 0-1, 2-3
Backplane 3: NVMe 4-5, 6-7
Connections between connectors:
Figure 72. SAS/SATA cable routing
ThinkSystem SR650 V2Maintenance Manual
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To
CFF expander: C0
CFF expander: C1
8i RAID/HBA adapter on PCIe slot 2:
• Gen 3: C0C1
• Gen 4: C0
Onboard: EXP PWR
Onboard: PCIe 1, PCIe 2
Retimer card on PCIe slot 1: C0, C1
↔ ↔ ↔
, , , ...
1 1 2 2 3 3
Figure 73. NVMe cable routing
↔
n n