Installing System Components 119

Installing the Cable Retention Bracket

1
Insert the hooks and tabs of the cable retention bracket into the slots in
the chassis wall and slide the bracket back until the latch engages.
2
Install the cooling fan bracket. See "Replacing the Fan Bracket."
3
Install the cooling shroud. See "Installing the Cooling Shroud."
Expansion Cards and Expansion-Card Risers
The system supports up to four PCI Express (PCIe) expansion cards on two
expansion-card risers.
Expansion-card riser 1 provides two
PCIe x4-link Gen 2 expansion slots.
Expansion-card riser 2 is offered in two versions:
The standard expansion-card riser 2 provides two
PCIe x8-link Gen 2
expansion slots.
The optional expansion-card riser 2 provides one PCIe x16-link
Gen 2
expansion slot.
CAUTION: Expansion cards can only be plugged into the slots on the expansion-
card risers. Do not plug any expansion cards into the riser connectors on the
system board.
To identify expansion slots, see "Expansion-Card Riser-Board Components
and PCIe Buses."

Expansion Card Installation Guidelines

Observe the following notes and guidelines regarding the expansion-card
slots:
PCI Express Generation 2 and Generation 1 expansion cards are supported
in all slots.
In slots 2, 3, and 4, expansion cards can have a maximum length of
24.13
cm (9.5 in). Slot 1 supports a full-length (30.99-cm [12.2-in]) expansion
card.
The system supports three full-height expansion cards and one low-profile
expansion card (slot 2).
Although slots 1 and 2 are physically PCIe x8 connectors, they function
only as PCIe x4-link slots.