Figure 441. SAS/SATA cable routing Figure 442. NVMe cable routing
From To From To
1  Backplane 1: SAS 1  8i adapter: C0
1  Backplane 3: NVMe 0-1
1  Onboard: PCIe 6
2  Backplane 2: SAS 2  8i adapter: C0
2  Backplane 3: NVMe 2-3
2  Onboard: PCIe 8
3  Backplane 3: SAS 3  8i adapter: C0
3  Backplane 3: NVMe 4-5
3  Onboard: PCIe 9
4  Backplane 3: NVMe 6-7
4  Onboard: PCIe 10, 11
Two 8 x SAS/SATA and one 8 x AnyBay (Gen 5) backplanes
This section provides cable routing information for the server model with two 8 x 2.5-inch SAS/SATA and one 
8 x 2.5-inch AnyBay (Gen 5) front backplanes.
To connect power cables for the front backplane(s), refer to 
“Backplanes: server models with 2.5-inch front 
drive bays” on page 312
.
To connect signal cables for the front backplane(s), refer to the following cable routing scenarios depending 
on your server configuration.
• 
“32i RAID/HBA adapter” on page 418
•  “32i RAID/HBA adapter + Retimer card” on page 419
•  “8i RAID/HBA adapters + Retimer card” on page 420
32i RAID/HBA adapter
The following shows the cable connections for the front (16 x 2.5-inch SAS/SATA + 8 x 2.5-inch Gen 5 
AnyBay) configuration with one 32i RAID/HBA adapter when one processor is installed.
Connections between connectors: 
1  ↔  1 ,  2  ↔  2 ,  3  ↔  3 , ...  n  ↔  n
418 ThinkSystem SR665 V3 User Guide