Dell PowerEdge R940 Installation and Service Manual
Removing drive backplane
Prerequisites
CAUTION:To prevent
damage to the drives and backplane, remove the hard drives from the
system before removing the backplane.
CAUTION:Note
the number of each hard drive and temporarily label them before you
remove the hard drive so that you can replace them in the same location.
- Follow the safety guidelines listed in Safety instructions.
- Follow the procedure listed in Before working inside your system.
- If installed, remove the front bezel.
- Remove the drives.
- Remove the fan cage.
Steps
- To remove the 2.5-inch (x24) drive backplane:
- Disconnect all the cables connected to the drive backplane and expander board.NOTE:To disconnect the NVMe cables, ensure that you remove the NVMe cables routed through the side of the system by lowering the fan tray side wall.
- Loosen the retention screw that secures the expander board to the system.
- Press the blue release tabs on the drive backplane.
- Tilt the backplane to disengage the guides on the system from the slots on the backplane.
- Lift the backplane out of the system.
Figure 1. Removing the 2.5-inch (x24) drive backplane 
- Disconnect all the cables connected to the drive backplane and expander board.
- To remove the 2.5-inch (x8) drive backplane:
- Disconnect all the cables connected to the drive backplane.
- Press the release tab on the drive backplane.
- Lift the backplane away from the system until the hooks on the system disengage from the slots on the backplane.
Figure 2. Removing the 2.5-inch (x8) drive backplane 
Next steps
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