Dell 4320 Projector - Manual (Page 75)

3 Access the Input Source menu, select the Wireless/USB and then select the
Wireless Display on the sub-menu.
The Wireless Guide Screen shown below appears:
4 Take note of the LOGIN CODE, NETWORK NAME (SSID), and IP
ADDRESS. You will need these information to log in later.
Install the Dell Wireless Application Software on Your Computer
5 Connect the LAN cable to the projector and the computer.
Using Your Projector 75