Dell PowerEdge R610 Hardware Owner's Manual page 133

5 Disconnect the power cable from the end of the SAS backplane.
6 Disconnect the SAS data cables from the backplane.
7 Remove the SAS backplane from the system:
While pulling the two blue latches towards the front of the system,
a
slide the backplane upward. See Figure 3-23.
When the backplane cannot slide upward any farther, pull the
b
backplane toward the back of the system to remove it from the
retention hooks.
Lift the board out of the system, being careful to avoid damaging
c
components on the face of the board.
Place the SAS backplane face down on a work surface.
d
Installing System Components
133