Lenovo ThinkBook Plus Gen 4 Hardware Maintenance Manual page 30

Table 2. FRU (CRU) categories
No.
FRU (CRU) category
1
LCD module
2
Fingerprint frame
3
Fingerprint module
4
Fingerprint cable
5
EDP cable brackets
6
System board
7
Heat sink
8
Solid-state drive (SSD)
9
Solid-state drive (SSD) copper foil
10
Solid-state drive (SSD) thermal pad
11
Speakers
12
Lower case
13
Battery pack
14
Battery pack mylar
15
Fans
16
Wi-Fi mylar
17
Upper case (with keyboard)
18
Audio board cable
19
Touchpad cable
a
Lenovo Digital Pen 3
b
ac power adapter
c
Screw kits
d
Label kits
24
Lenovo ThinkBook Plus Gen 4 Hardware Maintenance Manual