Lenovo System x3500 M4 Installation And Service Manual page 338

Power cable (BP1)
SAS/SATA
configuration
connector
Port 0 Port 1
Power cable (BP1)
Power cable (BP2)
Power cable (BP3)
Power cable (BP4)
Figure 252. Server models with thirty-two 2.5-inch hot-swap hard disk drives
6. For server models with thirty-two 2.5-inch hot-swap hard disk drives and two ServeRAID adapters.
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System x3500 M4 Installation and Service Guide
SAS signal
Configuration
cables cable
Power cable (BP2) Power cable (BP3)
Configuration
cable
SAS
signal
cables
0
1
2
3
Power cable (BP4)
0
Backplane configuration
cables
1
Backplane configuration
cables
2
3
Hard disk drive
backplane
(drive bay 0 - 7)
Hard disk drive backplane
with the expander
(drive bay 8 - 15)
Hard disk drive backplane
with the expander
(drive bay 16 - 23)
Hard disk drive backplane
with the expander
(drive bay 24 - 31)