Lenovo ThinkCentre A57e - Manual (Page 22)

Installing internal options
Important
Read “Handling static-sensitive devices” on page 4 before removing the
computer cover.
Installing an adapter card
This section provides information and instructions for installing an adapter card.
Your computer has one adapter card slot.
To install an adapter card:
1. Remove the computer cover. See “Removing the cover” on page 11.
2. At the rear of the computer, press the release button 1 to open the adapter
card latch 2 and remove the slot cover.
Figure 7. Opening the adapter latch
14 Hardware Installation and Replacement Guide