Casio MA1003-B Function Manual page 41

To remove the wireless adapter from the projector
1.
Turn off the projector and unplug its power cord from the power outlet.
2.
Loosen the two screws
the top of the cover towards you to remove it.
3.
Remove the wireless adapter.
 Grasp the wireless adapter and move the adapter left as you pull it out.
4.
Replace the cover and secure it with the two screws.

that secure the wireless adapter cover, and then pull
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Special YW-3 port
Wireless adapter YW-3