Dell 3115 Color Laser User Manual page 471

Close the con rd cover and turn the screw clockwise.
Removing the Optional Multil Card
NOTE: ptional wireless printer adapter is also installed, it must be remo .
Ensure that the multifunc nter is turned off and unplug all cables including the power
cord fr ear of the multifunction printer.
Turn the screw on the control ver gently in counter-clockwise direction and open the
cover.