16i RAID/HBA adapter + Onboard connectors
The following shows the cable connections for the 12 x 3.5-inch SAS/SATA configuration with a 2 x 3.5-inch/ 
4 x 3.5-inch/4 x 2.5-inch SAS/SATA rear backplane.
From To
Backplane 1: SAS 0, SAS 1 16i RAID/HBA 
1
: C0C1 (Gen 3) or C0 (Gen 4)
Backplane 1: SAS 2 16i RAID/HBA 
1
: C2C3 (Gen 3) or C1 (Gen 4)
Backplane 4: SAS Onboard: SATA 0
Backplane 4: PWR Riser 1: PWR1, PWR2
Notes: 
•  For a 2 x 3.5/4 x 2.5-inch SAS/SATA rear backplane, the 16i adapter
1 
is installed on PCIe slot 2.
•  For a 4 x 3.5-inch SAS/SATA rear backplane, the 16i adapter
1 
is installed on PCIe slot 3.
Below illustration uses the 4 x 3.5-inch SAS/SATA backplane as an example for cable routing. Cable routing 
for the other backplanes is similar.
Connections between connectors: 
1  ↔  1 ,  2  ↔  2 ,  3  ↔  3 , ...  n  ↔  n
Figure 127. Front backplane cable routing Figure 128. Rear backplane cable routing
16i RAID/HBA adapter + 8i RAID/HBA adapter
The following shows the cable connections for the 12 x 3.5-inch SAS/SATA configuration with a 2 x 3.5-inch/ 
4 x 3.5-inch/4 x 2.5-inch SAS/SATA rear backplane.
Chapter 3. Internal cable routing 171