Epson PowerLite X49 3600-Lumen XGA 3LCD Projector - Manual (Page 140)

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Saving Settings to a USB Flash Drive
You can save the projector settings you want to transfer to a USB flash drive.
Note: Use an empty flash drive. If the drive contains other files, the transfer may not complete correctly.
The flash drive must use the FAT format and cannot have any security features.
1. Turn off the projector and unplug the power cord from the projector's power inlet.
2. Insert the flash drive into the USB-A port.
Note: Connect the flash drive directly to the projector. Do not use a hub or your settings may not be
saved correctly.