Lenovo H520g Desktop - Manual (Page 71)

Figure 3. Component locations
The following table lists the major FRUs shown in Figure 3 “Component locations” on page 67 and identifies
which FRUs also are self-service CRUs or optional-service CRUs.
Notes:
• Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of
these types of CRUs include the keyboard, the mouse, any USB device, and the power cord. Other
self-service CRUs depending on product design might include memory modules, adapter cards, hard
disk drives, and optical drives.
• Optional-service CRUs: These CRUs are isolated parts within the computer and are concealed by an
access panel that is typically secured by more than two screws. Once the access panel is removed, the
specific CRU is visible.
Number FRU description Self-service CRU Optional-service CRU
1 Heat sink and fan assembly No Yes
2 Memory modules Yes No
3 Front bezel Yes No
4 Hard disk drive No Yes
5 PCI card (installed in some models) Yes No
6 PCI Express x16 graphics card slot Yes NO
7 System board No No
8 Power supply assembly No Yes
Chapter 8 . Locations 67