User Manual
![](/manual/lenovo/10mr0004us/1-user-manual-english/images/img-25.png)
Replacing CRUs 25
Replacing the external optical drive box
Attention
Do not open your computer or attempt any repairs before reading the Important
Product Information Guide.
1
Remove any media from the drives and turn off all connected devices and the computer.
2
Disconnect all power cords from electrical outlets and disconnect all cables that are connected to
the computer.
3
Replace the external optical drive box.
1 2
3 4