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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 1. System-board-assembly connectors
1 NMI button2 Rear USB connector
3 MicroSD socket4 VGA connector
5 Serial port connector6 Rear USB connectors
7 Second management Ethernet connector8 XCC system management port
9 Internal USB connector10 Riser 1 slot
11 OCP 3.0 slot12 CMOS battery (CR2032)
13 M.2 power connector14 Leak detection connector
15 Front USB connector16 7mm backplane power connector
17 PCIe connector 318 Fan connectors
19 Front I/O connector (for Y cable)20 Front I/O connector
21 Backplane 3 power connector22 PCIe connector 1
23 PCIe connector 224 Backplane 2 power connector
25 PCIe connector 426 CFF Retimer connector
27 CFF expander power connector28 Intrusion switch connector
29 Backplane 1 power connector30 PCIe connector 6
31 CFF RAID/HBA power connector32 PCIe connector 7
33 PCIe connector 834 External diagnostics connector
35 Front VGA connector36 PCIe connector 5
37 Riser 3 sideband connector38 PCIe connector 9
39 PCIe connector 1040 Power supply 1 connector
41 Riser 3 power connector42 Power supply 2 connector
43 GPU power connector44 Riser 2 slot
45 Firmware and RoT security module connector46 SATA connector 0
47 SATA connector 148 SATA connector 2
49 M.2/7mm backplane signal connector50 Backplane power connector
51 Backplane sideband connector 
  • The front I/O module on rack latch is connected to connector 20. See Front I/O connectors.

  • The front I/O module on media bay with an integrated diagnostics panel (an LCD diagnostics display) is connected to connector 20. See Front I/O connectors.

  • The front I/O module on media bay without LCD diagnostics display is connected to connectors 19 and 20 using a Y cable. See Front I/O connectors.