System-Board Switches And Jumpers - Lenovo 3633 Installation And Service Manual

Figure 11. Connectors on the system board
PCI riser card connector
1
Power supply connector
3
DIMM slot 1
5
DIMM slot 3
7
Power distribution board connector
9
System fan 2 connector
11
System fan 4 connector
13
SATA optical drive connector
15
Coin-cell battery connector
17
USB hypervisor key connector
19

System-board switches and jumpers

This topic helps you locate the jumpers and switches on the system board and get familiar with their
functions.
Important:
• Before you change any switch settings or move any jumpers, turn off the server. Then, disconnect all
power cords and external cables. Review the information in
installing server components" on page
• Any system-board switch or jumper block that is not shown in the illustrations in this document are
reserved.
• If there is a clear protective sticker on the switch blocks, you must remove and discard it to access the
switches.
Lenovo System x3250 M6 Installation and Service Guide
22
Microprocessor power connector
2
Backplane power connector
4
DIMM slot 2
6
DIMM slot 4
8
System fan 1 connector
10
System fan 3 connector
12
Mini-SAS connector
14
Operation information panel connector
16
Front USB connector
18
Operating temperature enhancement kit connector
20
"Safety" on page
91, and "Turning off the server" on page
v, "Before removing or
12.