Table 8. System-board-assembly connectors (continued)
8 Backplane 3 power connector
33 Second management Ethernet connector
9 3V battery (CR2032)
34 Internal USB connector
10 Fan 2 connector
35 PCIe riser 2 power connector
11 Backplane 7 power connector
36 PCIe riser B power connector
12 Backplane 2 power connector
37 PCIe riser 1 connector
13 Fan 1 connector
38 PCIe riser A power connector
14 Backplane 1 power connector 39 7mm drive/M.2 signal connector
15 NVMe 1-3 connector (left to right)
40 OCP slot 1 connector
16 Processor 3
41 M.2 power connector
17 Memory module slot 33-64 (left to right) 42 7mm drive power connector
18 P 1-12 connector (left to right)
43 Processor 1
19 VGA connector
44 P 13-20 connector (left to right)
20 External diagnostic handset connector
45 NVMe 11-12 connector (left to right)
21 Intrusion switch connector
46 Front USB connector
22 NVMe 9-10 connector (left to right)
47 Front I/O connector
23 Memory module slot 1-32 (right to left)
48 Processor 4
24 Processor 2
49 NVMe 4-8 connector (left to right)
25 Power backplane connector
System-board-assembly switches
The following illustrations show the location of the switches, jumpers, and buttons on the server.
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:
•
https://pubs.lenovo.com/safety_documentation/
• “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.
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.
34
ThinkSystem SR850 V3 System Configuration Guide
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