Dell EMC PowerEdge R750 Installation And Service Manual page 46

Figure 42. 24 x 2.5-inch SAS/SATA with dual controller, expander, fPERC, and APERC in Riser 1
Table 32. 24 x 2.5-inch SAS/SATA with dual controller, expander, fPERC, and APERC in Riser 1
From
SIG_PWR_1 (system board power connector)
APERC_CTRL_SRC_SA1 (adapter PERC controller
connector)
SIG_PWR_2 (system board power connector)
SL3_CPU1_PB2 (signal connector on system board)
Figure 43. 24 x 2.5-inch SAS/SATA with dual controller, expander, fPERC, and APERC in Riser 2
46 Installing and removing system components
To
BP_PWR_1 (backplane power connector)
DST_SB1 (backplane expander signal connector)
BP_PWR_2 (backplane power connector)
CTRL_DST_PA1 (fPERC input connector)