System-board-assembly connectors
The following illustrations show the internal connectors on the system board assembly.
Figure 1. System-board-assembly connectors


| 1 Fan 6 connector | 26 PCIe riser 3/D connector |
| 2 Backplane 6 power connector | 27 OCP slot 2 connector |
| 3 Fan 5 connector | 28 Power distribution board sideband connector |
| 4 Backplane 5 power connector | 29 PCIe riser C power connector |
| 5 Fan 4 connector | 30 Firmware and RoT security module connector |
| 6 Backplane 4 power connector | 31 MicroSD socket |
| 7 Fan 3 connector | 32 Serial port connector |
| 8 Backplane 3 power connector | 33 Second management Ethernet connector |
| 9 3V battery (CR2032) | 34 Internal USB connector |
| 10 Fan 2 connector | 35 PCIe riser 2 power connector |
| 11 Backplane 7 power connector | 36 PCIe riser B power connector |
| 12 Backplane 2 power connector | 37 PCIe riser 1 connector |
| 13 Fan 1 connector | 38 PCIe riser A power connector |
| 14 Backplane 1 power connector | 39 7mm drive/M.2 signal connector |
| 15 NVMe 1-3 connector (left to right) | 40 OCP slot 1 connector |
| 16 Processor 3 | 41 M.2 power connector |
| 17 Memory module slot 33-64 (left to right) | 42 7mm drive power connector |
| 18 P 1-12 connector (left to right) | 43 Processor 1 |
| 19 VGA connector | 44 P 13-20 connector (left to right) |
| 20 External diagnostic connector | 45 NVMe 11-12 connector (left to right) |
| 21 Intrusion switch connector | 46 Front USB connector |
| 22 NVMe 9-10 connector (left to right) | 47 Front I/O connector |
| 23 Memory module slot 1-32 (right to left) | 48 Processor 4 |
| 24 Processor 2 | 49 NVMe 4-8 connector (left to right) |
| 25 Power distribution board connector |
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