Dell EMC PowerEdge R550 6PX6M Installation And Service Manual page 58

Table 17. 8 x 3.5-inch SAS/SATA
From
CTRL_DST_PA1 (Signal connector on the front PERC)
BP_PWR_1 (Power connector on backplane)
BOSS_PWR (BOSS card power connector)
SL10_PCH_PA5 (BOSS signal connector on system board)
Figure 49. 16 x 2.5-inch SAS/SATA
Table 18. 16 x 2.5-inch SAS/SATA
From
CTRL_SRC_SB1 (Signal connector on the front PERC)
CTRL_DST_PA1 (Signal connector on the front PERC)
BP_PWR_1 (Power connector on backplane)
BOSS_PWR (BOSS card power connector)
SL10_PCH_PA5 (BOSS signal connector on system board)
58 Installing and removing system components
To
SL3_CPU1_PB2 (Signal connector on system board)
SIG_PWR_3 (Power connector on system board)
BOSS_PWR (Power connector for BOSS card on system
board)
BOSS signal on BOSS S2 card module
To
BP_DST_SB1 (Signal connector on backplane)
SL3_CPU1_PB2 (Signal connector on system board)
SIG_PWR_3 (Power connector on system board)
BOSS_PWR (Power connector for BOSS card on system
board)
BOSS signal on BOSS S2 card module