Lenovo ThinkStation D20 - Manual (Page 34)

Installing adapter cards
To install an adapter card:
1. Remove the computer cover. See “Removing the computer cover” on page 11.
2. Unlatch and open the adapter card retainer.
3. Remove the metal cover for the appropriate adapter card slot if you are installing an adapter card.
4. If you are installing a full length adapter card, remove the duct on the hard disk drive fan bracket by
pressing downwards on the top of the duct and then rotating the duct.
Figure 29. Removing the hard disk drive fan duct
5. Remove the adapter card from its static-protective package.
28 ThinkStation Hardware Installation and Replacement Guide