IBM THINKCENTER 8189 - Manual (Page 46)

2. Pivot one of the drive bay latch handles toward the front of the computer and
then pivot the drive bay cage upward, as shown, until it is latched in the up
position. Repeat this procedure for the remaining drive bay.
3. Remove the support bar by pulling it outward from the computer.
4. Remove the adapter-slot-cover latch.
5. Remove the adapter being replaced.
6. Remove the new adapter from its static-protective package.
7. Install the new adapter into the appropriate slot on the system board.
8. Install the adapter-slot-cover latch.
40 Hardware Maintenance Manual