Acer Altos R720 Series - Manual (Page 80)

3 System upgrade 70
Note: The install sequence for low profile PCI cards on the
opposite side of the riser assembly is the same.
6 Pull up the card to remove it (C), then store the card in an
antistatic protective wrapper.
7 Observe the post-installation instructions described on page 36.
To install a PCI card
Note: When installing PCI-X cards into the full height riser board,
the cards must be installed starting with the top slot first,
followed by the middle and then the bottom. Any card populated
in the bottom PCI slot will cause the bus to operate at 66 MHz.
1 Observe the ESD precautions and pre-installation instructions
described on page 35.
2 Remove the CPU air duct. Perform the instructions described in “To
remove the CPU air duct” section on page 42.
3 Remove the PCI riser assembly from the server. See “To remove the
PCI riser assembly” section on page 65.
4 Open the rear retention clip by pushing the blue slide upward (A)
and rotating clip to the fully open position.