You can remove the cover from a Server Module (blade) that has been powered-off and removed from the chassis.
Some X8440 Server Modules are shipped with tool-less covers. If the X8440 Server Module cover does not have screws holding it in place, see Remove Server Module (Tool-Less) Cover - X8450, X8440
Prepare the blade for removal.
Remove the blade from the chassis.
Place the blade on a stable work surface.
Use a Phillips screwdriver to loosen the two captive screws on each side of the cover and to remove the four screws on the top of the cover.
The number 1 below highlights the two captive screws on the left side of the cover.
Slide the cover toward the back of the blade until the cover clears the two tabs at the front of the blade, then remove the cover.
To reinstall the blade cover, slide the cover under the two tabs at the front of the blade, then tighten the four captive screws and reinstall the four screws on the top of the cover.