Lenovo 70AL, Maintenance Manual, Page: 35 / 190

Components of server models with four 3.5-inch hot-swap hard disk drive bays
Figure 10. Components of server models with four 3.5-inch hot-swap hard disk drive bays
1
Cover presence switch
11
Front system fan 2
2
Power conversion board
12
System board
3
Front panel
13
Low-profile PCI card bracket
4
Optical drive bay 2 (with an optical drive installed
in some models)
14
Main PCI card bracket
5
Optical drive bay 1 (with an optical drive installed)
15
System board battery
6
Hard disk drive bay 3
16
Expansion card
7
Hard disk drive bay 2
17
Heat sink and fan assembly
8
Hard disk drive bay 1
18
Rear system fan
9
Hard disk drive bay 0
19
Power supply
10
Front system fan 1
20
Four memory slots (installed memory modules vary by
model)
Note: The power conversion board 2 , low-profile PCI card bracket 13 , and main PCI card bracket 14 are
available in server models that come with a RAID card.
Chapter 3
.
Product overview
23