Locating components
Figure 3 “Component locations” on page 12 shows the locations of the various components in your
computer. To remove the computer cover, see “Removing the computer cover” on page 34.
Figure 3. Component locations
1 Heat sink and fan assembly
9 Secondary hard disk drive bay
2 Memory modules 10 Primary hard disk drive
3 Optical drive 11 PCI card (installed in some models)
4 Front audio and USB assembly 12 Cover presence switch (intrusion switch) (installed in some
models)
5 Thermal sensor
13 Rear fan assembly
6 Internal speaker (installed in some models)
14 Power supply assembly
7 Front fan assembly (installed in some models)
15 Microprocessor
8 Secondary hard disk drive (installed in some
models)
Locating parts on the system board
Note: Your computer comes with one of the following system boards.
12 ThinkCentre User Guide