32i RAID/HBA adapter + onboard connectors
•  “Front backplanes: 16 x 2.5-inch SAS/SATA + 8 x 2.5-inch Anybay” on page 147
•  “Rear backplane: 4 x 2.5-inch SAS/SATA” on page 148
Front backplanes: 16 x 2.5-inch SAS/SATA + 8 x 2.5-inch Anybay
The following shows the cable connections for the 16 x 2.5-inch SAS/SATA + 8 x 2.5-inch Anybay 
configuration with one 32i RAID/HBA adapter.
From To
Backplane 1: SAS 32i RAID adapter on PCIe slot 2: C0
Backplane 2: SAS 32i RAID adapter on PCIe slot 2: C1
Backplane 3: SAS 32i RAID adapter on PCIe slot 2: C2
Backplane 3: NVMe 0-1, 2-3
Onboard: PCIe 1, PCIe 2
Backplane 3: NVMe 4-5, 6-7
Onboard: PCIe 3, PCIe 4
Connections between connectors: 
1  ↔  1 ,  2  ↔  2 ,  3  ↔  3 , ...  n  ↔  n
Figure 101. SAS/SATA cable routing
Figure 102. NVMe cable routing
Chapter 3. Internal cable routing 147