Lenovo ThinkBook 13s Gen 4 Hardware Maintenance Manual page 30

Table 3. FRU (CRU) categories
No.
FRU (CRU) category
1
Upper case
2
Fingerprint board
3
Fingerprint board cable
4
I/O board cable (40 pin)
5
I/O board cable (30 pin)
6
I/O board
7
Heat sink
8
Fans
9
2280 Solid-state drive (SSD)
10
2242 Solid-state drive (SSD)
11
Solid-state drive (SSD) bracket
Note: The SSD bracket is used to lock the screw for the 2242 SSD.
12
2280 SSD thermalpad
13
2242 SSD thermalpad
14
Speakers
15
Battery pack
16
Lower case
17
Touchpad cable
18
Touchpad
19
System board
a
Power cord
b
ac power adapter
c
Screw kit
24
Hardware Maintenance Manual