90 Installing System Components
5
Press down and out on the ejectors on each end of the socket until the 
memory module pops out of the socket. See Figure 3-12.
Handle each memory module only on either card edge, making sure not to 
touch the middle of the memory module.
6
Replace the cooling shroud. See "Installing the Cooling Shroud" on 
page 69.
7
Close the system. See "Closing the System" on page 67.
8
Reconnect the system and peripherals to their power sources, and turn 
them on.
Expansion Cards and Expansion-Card Risers
Your system supports up to four PCI Express 
(PCIe) expansion cards installed 
in connectors on an
 
expansion-card riser.
 
Depending on the configuration, your system may have either riser 1 or 
riser 2:
• Expansion-card riser 1 provides three x4 Gen2 PCIe expansion-card slots 
and one x8 Gen2 PCIe expansion-card slot.
• Expansion-card riser 2 provides one x4 Gen2 PCIe expansion-card slot and 
one x16 Gen2 PCIe expansion-card slot.
  CAUTION: Expansion cards can only be installed in the slots on the 
expansion-card riser. Do not attempt to install expansion cards directly into 
the riser connector on the system board.
Expansion Card Installation Guidelines
• The expansion-card slots support full-height, half-length cards.
• The expansion-card slots are hot-swappable.
• PCI Express Generation 2 expansion cards are supported in all the slots.
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