System-board connectors for cable routing

See this section to locate and identify the connectors on the system board that are used for internal cable routing.

1 Drive backplane sideband connector	2 OCP sideband connector
3 Drive backplane power connector	4 OCP signal connector 1
5 OCP signal connector 2	6 Leakage sensor connector
7 PCIe riser power connector	8 PCIe riser sideband connector
9 Rear I/O Ethernet connector	10 M.2 boot adapter power and sideband connector
11 PDB management connector	12 PDB auxiliary power connector
13 PCIe riser connector 1	14 PCIe riser connector 2
15 Rear I/O USB DP connector	16 M.2 boot adapter signal connector
17 NVMe 4-5 connector	18 NVMe 2-3 connector
19 NVMe 0-1 connector	20 Thermal sensor connector