11 Internal speaker 25 Integrated camera with microphone*
12 Bluetooth module* 26 Ambient light sensor*
13 System fan
27 Multi-touch board*
14 Rear I/O assembly cover 28 VESA frame
Notes:
1. * denotes optional parts, which are available in some models.
2. Your computer might come with a frame stand or a lift stand. For more information about the lift stand,
see “Removing or reinstalling the lift stand” on page 17
.
System board part and connector locations
Figure 4 “System board part and connector locations” on page 12 shows the locations of the parts and
connectors on the system board.
Figure4. System board part and connector locations
1 Microprocessor
15 Rear I/O assembly connector
2 Multi-touch board cable connector
16 COM connector
3 Integrated camera cable connector 17 Thermal sensor connector
4 Memory slots (2) 18 Right I/O assembly cable connector
5 Mini PCI Express slot
19 Hard disk drive power connector
6 Ambient light sensor cable connector
20 PS/2 keyboard and mouse connector
12 ThinkCentre User Guide