Lenovo ThinkSystem SR665 V3 - Two 8 X SAS;SATA Backplanes

Riser 3/4/5 + Retimer card
The following shows the cable connections for the 8 x 2.5-inch NVMe configuration with riser 3, 4, and 5 and
one retimer card.
To connect riser 3 and riser 4 cables, see
“Riser 3/4 cage” on page 306.
To connect riser 5 cables, see
“Riser 5 cage” on page 309.
Connections between connectors:
1 ↔ 1 , 2 ↔ 2 , 3 ↔ 3 , ... n ↔ n
Backplane cable routing
Figure 322. Backplane cable routing
From To
1 Backplane 1: NVMe 0-1
1 Onboard: PCIe 5
2 Backplane 1: NVMe 2-3
2 Onboard: PCIe 7
3 Backplane 1: NVMe 4-5
3 Retimer card: C0
4 Backplane 1: NVMe 6-7
4 Retimer card: C1
Two 8 x SAS/SATA backplanes
This section provides cable routing information for the server model with two 8 x 2.5-inch SAS/SATA front
backplanes.
330
ThinkSystem SR665 V3 User Guide