System-board connectors

The following illustrations show the internal connectors on the system board.

Figure 1. System-board connectors

Table 1. System-board connectors

1 PCIe 9 connector	18 PCIe 5 connector
2 PCIe 8 connector	19 Firmware and RoT security module connector
3 Memory module slots (DIMM 4-6, right to left)	20 MicroSD socket
4 Processor	21 Serial port connector (COM)
5 Memory module slots (DIMM 1-3, right to left)	22 OCP module connector
6 PCIe 3 connector	23 PCIe 6 connector
7 PCIe 2 connector	24 Riser 1 power connector
8 System board power 2 connector (PDB PWR 2)	25 PCIe 7 connector
9 Fan signal connector (FCB Sideband)	26 Riser 1 signal connector (Riser1 Sideband)
10 Heat sink detect connector	27 3V system battery (CR2032)
11 M.2 signal connector (PCIe 1)	28 Bezel detect connector
12 M.2 power connector (M.2 Sideband)	29 Air flow sensor board connector (Air Velocity Sensor)
13 Internal backplane power connector	30 Intrusion switch connector
14 Front backplane power connector	31 3V security battery (CR2032)
15 System board power 1 connector (PDB PWR 1)	32 PCIe 10 connector
16 PCIe 4 connector	33 PCIe 11 connector
17 Power distribution board signal connector (PDB Sideband)