System-board connectors

The following illustration shows the connectors on the system board.

Figure 1. Connectors on the system board

1 PCI riser card connector	2 Microprocessor power connector
3 Power supply connector	4 Backplane power connector
5 DIMM slot 1	6 DIMM slot 2
7 DIMM slot 3	8 DIMM slot 4
9 Power distribution board connector	10 System fan 1 connector
11 System fan 2 connector	12 System fan 3 connector
13 System fan 4 connector	14 Mini-SAS connector
15 SATA optical drive connector	16 Operation information panel connector
17 Coin-cell battery connector	18 Front USB connector
19 USB hypervisor key connector	20 Operating temperature enhancement kit connector