Dell Precision M20 Service Manual page 46

1 device latch release
2. Pull the device by the latch release to remove the device from the module bay.
Removing the Device If the Security Screw Is Installed
1. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions.
NOTICE: To prevent damage to devices, place them in a safe, dry place when they are not installed in the computer. Avoid pressing down on them or
placing heavy objects on top of them.
2. Close the display and turn the computer over.
3. Use a #1 Phillips screwdriver to remove the M2 x 3-mm screw from the bottom of the computer.
1 M2 x 3-mm screw
4. Press the device latch release so that the latch release pops out.
5. Pull the device by the latch release to remove the device from the module bay.