Lenovo ThinkCentre M90a Gen 3 Hardware Maintenance Manual page 54

Number
6
®
VESA mount bracket
7
Cover presence switch (intrusion switch)*
8
Internal speakers (2)
9
Microprocessor
10
System board
11
Power supply assembly (with AC-in bracket)
12
Hard disk drive*
13
Hard disk drive cable*
14
Optical drive with cable*
15
Optical drive bracket*
16
Hard disk drive bracket* (for the secondary hard
disk drive only)
17
Middle frame (LCD panel bracket)
18
Wi-Fi antennas (2)*
19
LCD backlight cable, touch board cable, and
LCD LVDS cable
20
LCD panel
21
Radar card with cable*
22
Front decorative cover
23
Main frame
24
Rear I/O cover
25
Memory module
26
Side I/O brackets
27
M.2 solid-state drive*
28
System fan
29
Heat sink
30
Card reader board with cable*
31
Wi-Fi card shield*
32
Wi-Fi card*
33
Serial connector module*
34
GPU card
35
Coin-cell battery
36
Integrated camera and microphone module*
37
Power cord
38
Keyboard
39
Mouse
40
Thermal pads
48
M90a Gen 3 and M90a Pro Gen3 Hardware Maintenance Manual
Description Self-service CRU Optional-service CRU
No
No
No
No
No
No
No
No
Mp
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No