Lenovo ThinkSystem ST250 V3 - System-Board Connectors

System-board connectors
The following illustrations show the internal connectors on the system board.
Figure 12. System-board connectors
Table 10. System-board connectors
1 SYS_FAN3 connector
22 Fan4 connector
2 Processor power connector
23 Front I/O module connector
3 DIMM 1
24 Front USB 3.0/2.0 header
4 DIMM 2 25 M.2 power connector
5 DIMM 3
26 Internal USB 3.2 Gen1 connector
6 DIMM 4 27 M.2 signal connector
7 BP2 power connector 28 Intrusion switch connector
8 BP1 power connector
29 CMOS battery
9 Power distribution board side band connector 30 Firmware and RoT security module connector
10 Fan1 connector
31 PCIe slot 4
11 Processor socket
32 PCIe slot 3
12 Fan2 connector
33 PCIe slot 2
13 Optical drive power connector 34 PCIe slot 1
14 System power connector
35 NMI button
15 Slimline x8 connector 36 Two USB 3.2 Gen1 connectors
16 SATA 6 37 Two USB 3.2 Gen1 connectors
28 ThinkSystem ST250 V3 System Configuration Guide