Locating Parts On The System Board - Lenovo ThinkCentre M91p User Manual

Locating parts on the system board

Figure 4 "System board parts locations" on page 12 shows the locations of the parts on the system board.
Figure 4. System board parts locations
1
4-pin power connector
2
Microprocessor
3
Microprocessor fan connector
4
Memory slot 1 (DIMM1)
5
Memory slot 2 (DIMM2)
6
Memory slot 3 (DIMM3)
7
Memory slot 4 (DIMM4)
8
Thermal sensor connector
9
24-pin power connector
10
Battery
11
Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
12
Parallel connector
13
SATA connectors 1 and 2 (SATA 3.0 connectors)
14
SATA connector 3 (SATA 2.0 connector)
12
ThinkCentre User Guide
15
eSATA connector
16
Power fan connector
17
Front panel connector (for connecting power switch and
LED indicators)
18
Front USB connector 1 (for connecting USB port 1and 2
on the front bezel)
19
Front USB connector 2 (for connecting additional USB
devices)
20
Serial (COM2) connector
21
Internal speaker connector
22
Front audio connector
23
PCI card slots (2)
24
PCI Express x1 card slot
25
PCI Express x16 graphics card slot
26
System fan connector
27
Cover presence switch connector (Intrusion switch
connector)
28
PS/2 keyboard and mouse connector