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 Fan 3 connector for Rear FAN	19 Front panel connector
2 Processor power connector	20 SATA hard disk drive 6/optical disk drive connector 1
3 Processor	21 SATA hard disk drive 7/optical disk drive connector 2
4 Backplane 1 power connector	22 SATA hard disk drive 0–3 connector
5 PIB side band connector	23 SATA hard disk drive 4 connector
6 Fan 1 connector for Front FAN 1	24 SATA hard disk drive 5 connector
7 Backplane 2 power connector	25 Front USB 3.0 / 2.0 header
8 Fan 2 connector for CPU FAN	26 PCIe3 x8 slot 4
9 Optical drive power connector	27 PCIe3 x4 slot 3
10 System power connector	28 PCIe3 x16 slot 2
11 CMOS battery	29 PCIe3 x1 slot 1
12 Internal USB 3.1 Gen 1 connector	30 NMI button
13 TPM card connector	31 USB 3.1 Gen 1 connectors
14 Mounting nut for 80 mm M.2	32 USB 3.1 Gen 2 connectors
15 Mounting nut for 42 mm M.2	33 Ethernet 2 connector
16 Fan 4 connector for Front FAN 4	34 Ethernet 1 connector (shared with XCC network port)
17 M.2 module connector	35 Dedicated XClarity Controller (XCC) network connector
18 Chassis intrusion switch connector	36 VGA + COM connector