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
13 14-pin power connector 14 eSATA connector
15 SATA connectors 16 Power fan connector
17 Front panel connector (for connecting LED indicators
and the power button)
18 Front USB 3.0 connector (for connecting USB
connectors on the front panel)
19 USB 2.0 connector or card reader connector 20 USB hardware disable header
21 Clear CMOS (Complementary Metal Oxide
Semiconductor) /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)
6 ThinkStation P300 User Guide