AVer M50(355AF) user manual - Manual (Page 29)

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Menu Screen Function
USB State
Select the status of the AVerVision M50 when it is
connected to the computer via USB. Make sure the USB
Flash Drive switch is set to the left.
USB Camera - can be used as a computer webcam or
with our bundled software to record video and capture
still image.
Mass Storage - transfer the captured pictures/videos
from the memory to computer hard disk.
Backup
Copy the image from the built-in memory to SD or USB
flash drive.
Profile Save
Save current setting in the selected profile number. Only
effect, mode, brightness and contrast settings can be
saved.
Profile Recall
Restore the setting back to the selected profile number.