Lenovo ThinkStation P300 - Manual (Page 18)

Locating parts on the system board
The following illustration shows the locations of the parts on the system board.
Figure 4. System board part locations
1 PS/2 keyboard and mouse connector 2 4-pin power connector
3 Battery 4 Microprocessor
5 Microprocessor fan connector 6 Memory slot 1 (DIMM1)
7 Memory slot 2 (DIMM2) 8 Memory slot 3 (DIMM3)
9 Memory slot 4 (DIMM4) 10 Thermal sensor connector
11 Hard disk drive fan connector 12 4-pin SATA power connectors (2)
13 14-pin power connector 14 eSATA connector
15 SATA 3.0 connectors (4) 16 Power fan connector
17 Front panel connector (for connecting LED
indicators and the power button)
18 Front USB 3.0 connector
19 USB 2.0/card-reader connector 20 USB hardware disable header
21 Clear CMOS/Recovery jumper 22 Serial (COM2) connector
23 Internal speaker connector 24 Front audio connector
25 PCI card slot 26 PCI Express x16 card slot (negotiable link width x4, x1)
27 PCI Express x1 card slot 28 PCI Express x16 graphics card slot (graphics card available
on some models)
29 System fan connector 30 Cover presence switch connector (intrusion switch
connector)
6 ThinkStation P300 User Guide