System-board-assembly layout
This section provides information about the connectors, switches, and jumpers that are available on the 
system board assembly.
The following illustration shows the layout of the system board assembly that contains the firmware and RoT 
security module, system I/O board, and processor board.
Figure 10. System-board-assembly layout
1  System I/O board
2  Firmware and RoT security module 3  Processor board
For information about the LEDs that are available on the system board assembly, see: 
• 
“System-board-assembly LEDs” on page 493
•  “LEDs on the firmware and RoT security module” on page 495
•  “System-board-assembly connectors” on page 30
•  “System-board-assembly switch” on page 32
System-board-assembly connectors
This section provides information about the internal connectors on the system I/O board and processor 
board.
30 ThinkSystem SR665 V3 User Guide