Dell EMC PowerEdge R750 Installation And Service Manual page 36

Figure 29. 12 x 3.5-inch SAS/SATA + 4 x 2.5-inch SAS/SATA with APERC in Riser 2
Table 19. 12 x 3.5-inch SAS/SATA + 4 x 2.5-inch SAS/SATA with APERC in Riser 2
From
SIG_PWR_1 (system board power connector)
APERC_CTRL_SRC_SA1 (adapter PERC controller
connector)
APERC_CTRL_SRC_SB1 (adapter PERC controller
connector)
SIG_PWR_0 (system board power connector)
Figure 30. 12 x 3.5-inch SAS/SATA + 4 x 2.5-inch NVMe with APERC in Riser 2 and optional BOSS S2 module
36 Installing and removing system components
To
BP_PWR_1 (backplane power connector)
BP_DST_SA1 (backplane signal connector)
BP_DST_SA1 (rear backplane signal connector)) and
BP_DST_SB1 (backplane signal connector)
BP_PWR_1 (rear backplane power connector)