System-board components

The illustration in this section shows the component locations on the system board.

Figure 1. System board components

Table 1. Components on the system board

Callout		Callout
1	Rear fan connector	22	SATA 4
2	Front VGA connector	23	Fan 4 connector for front fan
3	Processor power connector	24	TPM/TCM connector
4	DIMM Slot 1	25	Front panel connector
5	DIMM Slot 2	26	Intrusion switch connector
6	DIMM Slot 3	27	Front USB connector
7	DIMM Slot 4	28	Internal USB 3.2 Gen 1 connector
8	Processor socket	29	M.2 signal connector
9	Backplane 1 power connector	30	M.2 power connector
10	Power distribution board side band connector	31	CMOS battery
11	Fan 1 connector for front fan	32	PCIe Slot 4
12	Backplane 2 power connector	33	PCIe Slot 3
13	Fan 2 connector for processor	34	PCIe Slot 2
14	Optical/tape drive power connector	35	PCIe Slot 1
15	System power connector	36	Two USB 3.2 Gen 2 connectors
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