Dell PowerFlex R750 Owner's Manual page 39

Figure 41. 10 x 2.5-inch SAS with fPERC
Table 31. 10 x 2.5-inch SAS with fPERC
From
SIG_PWR_1 (system board power connector)
CTRL_DST_PA1 (fPERC input connector)
CTRL_SRC_PA1 ( fPERC output connector)
Figure 42. 10 x 2.5-inch NVMe and 2 x 2.5-inch NVMe
To
BP_PWR (backplane power connector)
SL3_CPU1_PB2 (Signal connector on system board)
DST_PA3 (backplane signal connector)
Component installation guidelines 39