Table 10. System-board-assembly connectors (continued)
10 Second MGMT Ethernet connector 33 CFF retimer connector
11 M.2 signal connector 34 Backplane power connector
12 PCIe connector 8 / SATA connector 3 35 PCIe connector 1
13 7mm/Rear backplane sideband connector 36 PCIe connector 2
14 OCP 3.0 module connector 37 PCIe connector 3 / SATA connector 0
15 Riser 1 slot 38 Power supply 1 connector
16 PCIe connector 9 / SATA connector 4 39 PCIe connector 4 / SATA connector 1
17 CMOS battery (CR2032)
40 Power supply 2 connector
18 Front USB connector 41 GPU/7mm/Rear backplane power connector
19 7mm backplane signal connector
42 PCIe connector 5
20 Pump 1 connector
43 PCIe connector 6
21 Leak detection connector 44 Riser 2 slot
22 PCIe connector 7 / SATA connector 2
45 RoT connector
23 Fan 1–8 connectors
46 Intrusion switch connector (reserved)
System-board-assembly switches
The following illustrations show the location of the switches on the server.
Note: If there is a clear protective sticker on the top of the switch blocks, you must remove and discard it to
access the switches.
Important:
1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all
power cords and external cables. Review the following information:
•
http://thinksystem.lenovofiles.com/help/topic/safety_documentation/pdf_files.html
• “Installation Guidelines”, “Handling static sensitive devices”, and “Power off the server ” in User
Guide or Hardware Maintenance Guide.
2. Any system-board-assembly switch or jumper block that is not shown in the illustrations in this
document are reserved.
SW5 switch block
The following table describes the functions of the SW5 switch block on the system board (system board
assembly).
Table 11. System-board-assembly SW5 switch block description
Switch-bit
number
Switch name
Default position Description
1 SW5–1 Force BMC CPU
reset
Off Forces BMC and CPU into reset when changing it to
the ON position.
2 SW5–2 Clear CMOS Off Clears the real-time clock (RTC) registry when
changing it to the ON position.
Chapter 2. Server components 23
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