System board connectors
The following illustration shows the internal connectors on the system board.
Figure 1. System board connectors
| 1 M.2 slot 1 / M.2 slot 2 | 2 PCIe Riser 2 power and sideband connector |
| 3 MCIO connector 4 / PCIe Riser 2 signal connector / Rear drive backplane signal connector | 4 PCIe Riser 1 power and sideband connector |
| 5 MCIO connector 8 / PCIe Riser 1 signal connectors | 6 System I/O board connector (DC-SCM) |
| 7 PDB_0V connector (PSU_GND) | 8 PDB_P12V connector (PSU_P12V) |
| 9 MCIO connector 7 | 10 Integrated diagnostics panel connector |
| 11 MCIO connector 6 | 12 MCIO connector 5 |
| 13 MCIO connector 10 | 14 CPU leakage detection sensor connector |
| 15 MCIO connector 3 | 16 MCIO connector 2 |
| 17 MCIO connector 1 | 18 MCIO connector 9 |
| 19 PCIe switch sideband connector | 20 Front USB / Mini DisplayPort connector |
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