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Cisco UCS C24 Server Installation and Service Guide
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Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Replacing a PCIe Riser The server contains two toolless PCIe risers for horizontal installation of PCIe cards.
See PCIe Slots, page 3-34 for specifications of the PCIe slots on the risers.
Note PCIe riser 2 (slots 3, 4, and 5) is not available in single-CPU configurations.
Figure 3-19 Rear Panel, Showing PCIe Slots
To install or replace a PCIe riser, follow these steps:
Step 1 Remove the PCIe riser that you are replacing:
a. Power off the server as described in the “Shutting Down and Powering Off the Server” section on
page 3-6.
b. Slide the server out the front of the rack far enough so that you can remove the top cover. Y ou might
have to detach cables from the rear panel to provide clearance.
Caution If you cannot safely view and access the component, remove the server from the rack.
c. Remove the top cover as described in “Removing and Replacing the Server Top Cover” section on
page 3-7.
d. Disconnect all cables from any PCIe cards that are installed in the PCIe riser.
e. Grasp both ends of the riser and evenly pull straight up to disengage its circuit board from the socket
on the motherboard. Set the riser on an antistatic surface.
f. If the riser has a card installed, remove the card from the riser (see Replacing a PCIe Card,
page 3-34).
Step 2 Install a new PCIe riser:
a. If you removed a card from the old PCIe riser, install the card to the new riser (see Replacing a PCIe
Card, page 3-34).
b. Position the PCIe riser over its socket on the motherboard and over its alignment points in the
chassis (see Figure 3-20).
1PCIe riser 2 slots (three half-height slots) 2PCIe riser 1 slots (two full-height slots)
285255
PSU 2 PCIe 4 PCIe 3 PCIe 1
PCIe 2
PCIe 5
PSU 1
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