1  Firmware and RoT security module
2  System I/O board
3  Processor board
For more information about the connectors, switches, or LEDs that are available on the system board 
assembly, see: 
• 
“System-board-assembly connectors” on page 35
•  “System-board-assembly switches” on page 36
•  “System-board-assembly LEDs” on page 470
•  “LEDs on the Firmware and RoT Security Module” on page 473
System-board-assembly connectors
The following illustration shows the internal connectors on the system board assembly which contains the 
system I/O board and processor board.
Figure 13. System-board-assembly connectors
1  NMI button
2  Rear USB connector
3  MicroSD socket 4  VGA connector
Chapter 2. Server components 35