12 x 3.5" SAS/SATA + 4 x 3.5" SAS/SATA + 4 x 3.5"SAS/SATA

This topic provides cable routing information for the 12 x 3.5-inch SAS/SATA front backplane with a 4 x 3.5-inch SAS/SATA middle backplane and a 4 x 3.5-inch SAS/SATA rear backplane.

32i RAID/HBA adapter​

Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Figure 1. Backplane signal cable routing		Figure 2. Middle/Rear backplane power cable routing
From	To	From	To
1 Backplane 1: SAS 0, SAS 1	32i adapter C0	1 Backplane 4: PWR	Riser 2: PWR1, PWR2
2 Backplane 1: SAS 2 Backplane 4: SAS	C1	2 Backplane 5: PWR	Onboard: GPU power Onboard: backplane power Onboard: backplane sideband
3 Backplane 5: SAS	C2