Table 8. Components on the system board (continued)
Callout Callout
16
MCIO x4 connector for NVMe
37
Two USB 3.2 Gen 2 connectors
17
SATA 6
38
Ethernet connector 2
18
SATA 7
39
Ethernet connector 1 (shared with XCC network 
port)
19
SATA 0 to 3
40
Lenovo XClarity Controller(XCC) management port
20
SGPIO1 connector
41
VGA and serial port connector
21
SATA 5
System-board LED
The illustration in this section shows the light-emitting diode (LED) on the system board.
Figure 12. System-board LED
Table 9.  System-board LED
1  System error LED (amber)
System-board jumpers and buttons
The illustration in this section shows the location of the jumpers and buttons 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.
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ThinkSystem ST250 V2 Maintenance Manual