Acer AR380 F1 - Manual (Page 80)

3 System upgrades 62
5 Close the restraining latch.
6 Connect the appropriate cables to the card.
7 Observe the post-installation instructions on page 27.
Installing the right riser card
Perform the following steps:
1
Observe the pre-installation instructions on page 26.
2 Unclip the restraining latch and open in the direction shown
below.