Acer Altos G5350 Series - Manual (Page 80)

3 System upgrade 70
8 Press the PCI slot release latch on the rear panel of the server (4).
9 Observe the post-installation instructions described on page 34.
Note: When you turn on the system, the BIOS setup automatically
detects and assigns resources to the new device (applicable only to
Plug-and-Play expansion cards).