3.  Remove all power:
a.  Disconnect each power cord from the power source.
b.  Disconnect each power cord from the  server.
4.  Disconnect all peripheral cables from the  server.
5.  Remove the server from the  rack.
6.  Place the server on a flat, level work surface.
7.  Remove the access panel.
8.  If an expansion card with internal cables is installed on the riser, disconnect the cables from the card.
9.  Remove the riser cage:
a.  Release the half-turn spring latch (callouts 1 and 2).
b.  Lift the riser cage off the system board (callout 3).