The dongle is required to link to the VBOX HD Lite preview app, which allows you to fine-tune the image on your VBOX HD Lite.
 
Please note: The Wi-Fi dongle needs to be connected to the device before you boot it up to make the VBOX Video app work. The use of the dongle and the VBOX Video app is for setup ONLY. The VBOX HD Lite will not log data while the dongle is connected.