Figure 4. System-board connectors
Table 5. System-board connectors
1 DIMM slots 13–18 9 DIMM slots 7–12
2 Processor socket 2 10 DIMM slots 19–24
3 DIMM slots 1–6
11 Switch blocks
4 Processor socket 1
12 CMOS battery - CR2032
5 I/O expansion 1 connector
13 Light path diagnostics
6 Fabric connector socket 14 M.2 backplane connector
7 Trusted Cryptographic Module (TCM) connector
15 2.5-inch drive backplane connector
8 I/O expansion 2 connector
System-board switches
Use this information to locate the system-board switches.
The following illustration shows the location of the switch blocks on the system board.
Important:
1. Before you change any switch settings or move any jumpers, turn off the compute node; then,
disconnect all power cords and external cables. Review the information in http://thinksystem.lenovofiles.
com/help/topic/safety_documentation/pdf_files.html, “Installation Guidelines” on page 21, “Handling
static-sensitive devices” on page 23, and “Power on the compute node” on page 8.
2. Any system-board switch or jumper block that is not shown in the illustrations in this document are
reserved.
14
ThinkSystem SN550 Compute Node Maintenance Manual
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