Figure 493. Front/Middle backplane signal cable routing Figure 494. Middle backplane power cable routing
From To From To
1  Backplane 1: SAS 0, 
SAS 1
1  16i adapter 
•  Gen 4: C0
•  Gen 3: C0C1
1  Backplane 5: PWR
1  Onboard: 
•  GPU power
•  Rear backplane power
•  Rear backplane 
sideband
2  
•  Backplane 1: SAS 2
•  Backplane 5: SAS
2  16i adapter 
•  Gen 4: C1
•  Gen 3: C2C3
12 x 3.5" SAS/SATA + 8 x 2.5" NVMe
This topic provides cable routing information for the front 12 x 3.5-inch SAS/SATA + middle 8 x 2.5-inch 
NVMe configuration with one 16i RAID/HBA adapter.
Connections between connectors: 
1  ↔  1 ,  2  ↔  2 ,  3  ↔  3 , ...  n  ↔  n
Chapter 6
. Internal cable routing 449