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Remove a rear riser assembly

Use this information to remove a rear riser assembly.

About this task

sharp edge
Sharp edges, corners, or joints nearby.

The server supports different types of riser cages (see Rear PCIe adapter and riser assembly replacement).

  • Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

  • Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

  • Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

  • Before you remove any component of a RAID array (drive, RAID card, etc.), back up all RAID configuration information.

Watch the procedure
  • A video of this procedure is available at YouTube.


  1. Make preparation for the task.
    1. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top cover, or remove the server from the rack. See Remove the server from rack.
    2. Remove the top cover. See Remove the top cover.
    3. If there is any PCIe adapter installed on the riser card, record the cable connections first. Then, disconnect all cables from the PCIe adapter.
      • If you need to disconnect cables from the system board assembly, disengage all latches or release tabs on cable connectors first. Failing to release the tab before removing the cables will damage the cable sockets on the system board assembly. Any damage to the cable sockets might require replacing the system board assembly.

      • The connectors on your system board assembly might look different from those in the illustration, but the removal procedure is the same.

        1. Press the release tab to release the connector.

        2. Disengage the connector from the cable socket.

      Figure 1. Disconnecting cables from the system board assembly

  2. Remove the riser assembly.
    • Riser 1 assembly (same for riser 2 assembly)

      The following uses the 3-slot riser cage as an example for illustration. The replacement procedure for the 1-slot riser cage is similar.
      Figure 2. Riser 1 assembly removal
      Riser 1 assembly removal
    1. Loosen the screw that secures the riser assembly.
    2. Grasp the riser assembly by its edges and carefully lift it straight up and off the chassis.
    • Riser 3 assembly

      The following uses the Gen 5 riser 3 cage as an example for illustration. The replacement procedure is the same for Gen 4 riser 3 cage.
      Figure 3. Riser 3 assembly removal
      Riser 3 assembly removal
    • 4LP riser 3/4 assembly

      1. Remove riser 3 assembly and riser 4 assembly.

        Figure 4. Riser 3/4 assembly removal
        Riser 3/4 assembly removal
      2. Remove the riser cage tray.

        Figure 5. Riser cage tray removal
        Riser cage tray removal
        1. Remove the screws that secure the riser cage tray.

        2. Slide the riser cage tray backwards and then lift it out the chassis.

After you finish

  1. Remove the PCIe adapter from the riser assembly. See Remove a rear PCIe adapter.

  2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

Demo video

Watch the procedure on YouTube