Lenovo IdeaCentre K330B Hardware Replacement Manual page 32

After the Graphic Adapter is installed , install the bracket as the
following:
1. Install the plastic bracket into the chassis so that the screw holes in the plastic
bracket align with those in the chassis. Let the slot on the plastic bracket to
clip onto the adapter.
2. Fit the two screws to secure the plastic bracket.
Note: Use only screws provided by Lenovo.
Hardware Replacement Guide
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