Lenovo IdeaCentre K330 Replacement Manual page 30

After the Graphic Adapter is installed, install the bracket as the
following:
1. Install the metal bracket into the chassis so that the screw hole in the metal
bracket aligns with the hole in the chassis. Let the slot on the metal bracket
clip the adapter.
2. Screw back the screws on the metal bracket.
Note: Use only the screw provided by Lenovo.
Hardware Replacement Guide
27