To connect power cables for the front backplane(s), refer to “Backplanes: server models with 2.5-inch front 
drive bays” on page 312
.
To connect signal cables for the front backplane(s), refer to the following cable routing scenarios depending 
on your server configuration.
• 
“Front backplanes: 16 x 2.5" SAS/SATA” on page 331
•  “Front + rear backplanes: 16 x 2.5" SAS/SATA + 4 x 2.5" SAS/SATA” on page 334
•  “Front + middle backplanes: 16 x 2.5" SAS/SATA + 4 x 2.5"/8 x 2.5" SAS/SATA” on page 335
•  “Front + middle + rear backplanes: 16 x 2.5" SAS/SATA + 8 x 2.5" SAS/SATA + 4 x 2.5" SAS/SATA” on 
page 337
Front backplanes: 16 x 2.5" SAS/SATA
This topic provides cable routing information for the server model with two 8 x 2.5-inch SAS/SATA front 
backplanes.
• 
“Onboard connectors” on page 331
•  “16i RAID/HBA adapter” on page 332
•  “CFF 16i RAID/HBA adapter” on page 333
Onboard connectors
The following shows the cable connections for the 16 x 2.5-inch SAS/SATA configuration with onboard 
connectors.
To connect riser 3 and riser 4 cables when two processors are installed, see 
“Riser 3/4 cage” on page 306.
To connect riser 5 cables when two processors are installed, see 
“Riser 5 cage” on page 309.
Connections between connectors: 
1  ↔  1 ,  2  ↔  2 ,  3  ↔  3 , ...  n  ↔  n
Chapter 6
. Internal cable routing 331