![](/images/new-backgrounds/1112618/112618163x1.webp)
Table 23. Removal steps of system board, bluetooth daughter card, fan assembly, and backup battery (continued)
For ThinkPad X100e
5
5
6
7
9
8
For ThinkPad X120e
5
5
5
5
6
7
8
9
DANGER
Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.
When installing: Make sure that the connectors are attached firmly.