Lenovo ThinkCentre M75e Hardware Maintenance Manual page 84

Figure 7. Removing the front bezel
4. To reinstall the front bezel, align the other three plastic tabs on the right side of the front bezel with
the corresponding holes in the chassis, then pivot the front bezel inward until it snaps into position
on the left side.
Figure 8. Reinstalling the front bezel
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ThinkCentre Hardware Maintenance Manual