System-board connectors

This section contains information on the internal connectors on the system board.

Table 1. System-board connectors

1MicroSD card socket	17PDB auxiliary power connector
2Drive backplane or front I/O sideband connector	18Riser power connector
3Firmware and RoT security module connector	19Riser slot 1 connector
4(Reserved)	20Processor socket
5OCP power and sideband connector	21Memory module slots 1-12
6OCP connector	22Rear I/O connector
7Power bus bar connector	23M.2 bay 2
8Drive backplane power connector	24M.2 bay 3
9Fan 1 connector	25SATA 0-5 connector
10Fan 2 connector	26NVMe 4-5 connector
11Fan 3 connector	27CMOS battery socket
12RAID power connector	28(Reserved)
13Fan 4 connector	29NVMe 2-3 connector
14RAID signal connector	30NVMe 0-1 connector
15M.2 boot adapter connector	31Inlet temperature sensor connector
16PDB sideband connector