Asus AP140R-E1 - Manual (Page 30)

Chapter 2: Hardware setup 2-16
5. If you wish to install a second PCI
card, repeat steps 1 and 2 then
install the card to the right
bracket as shown. Secure the
card with a screw.
6. Install the right bracket with the
card into the PCI-X slot on the
motherboard. Make sure that the
golden connectors completely fit
the slot and the bracket aligns
with the rear panel.
When properly installed, the riser
card brackets with PCI cards
appear as shown.
7. Connect the cable(s) to the cards, if applicable.
4. Install the left bracket with the
card into the PCI-X slot on the
motherboard. Make sure that the
golden connectors completely fit
the slot and the bracket aligns
with the rear panel.