Lenovo M5800 Desktop - Manual (Page 15)

Locating parts on the system board
Figure 3 “System board part locations” on page 5 shows the locations of the parts on the system board.
Figure 3. System board part locations
1 4-pin power connector 15 Front panel connector (for connecting LED indicators
and the power switch)
2 Microprocessor 16 Front USB connector 1 (for connecting USB ports
1 and 2 on the front bezel)
3 Microprocessor fan connector 17 Front USB connector 2 (for connecting an additional
USB device)
4 Memory slot 1 (DIMM 1) 18 Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
5 Memory slot 2 (DIMM 2) 19 Serial (COM2) connector
6 Memory slot 3 (DIMM 3) 20 Internal speaker connector
7 Memory slot 4 (DIMM 4) 21 Front audio connector
8 Thermal sensor connector 22 PCI card slots (2)
9 4-pin power connectors (2) 23 PCI Express x1 card slot
10 14-pin power connector 24 PCI Express x16 graphics card slot
11 Battery 25 Cover presence switch connector (intrusion switch
connector)
12 SATA 3.0 connectors (4) 26 System fan connector
13 Power fan connector 27 PS/2 keyboard and mouse connector
14 Parallel connector
Chapter 1 . Product overview 5