SIIG Transport GX21 B5350 - Manual (Page 24)

2.2 Installing motherboard components
18 Chapter 2: Setting up
6. Press the PCI card into place in the slot on the riser card.
Ensure that the card is seated properly in the slot on the
riser card and that the riser card is properly seated in its
slot on the motherboard.
7. Reinsert the PCI card clamp.
Insert PCI card tip
in slot here
Riser card