Eyemax HX-04 User Manual page 58

How to erase media
You can erase data in the storage media, like USB memory stick
When you are to use USB memory, after connecting USB memory to USB port,
click "Erase media" button to erase media.
It is recommended to backup important data stored in USB memory before using
this function.
※ The backup process is not started if you specify invalid starting and ending
date/time.
※ The backup period cannot exceed 24 hours.
※ The USB memory should be formatted as FAT32.
※ Maximum size of backup data is depends on the storage media to be used. In case
of USB memory stick, only free space is used.
※ If there's duplicated data at the same time stamp, you can select specific data
position with the dialog box as below. Select data position with spin box, and then
click "OK" button to start back up. Bigger number of duplicated data stands for
more recent data.
※ The other functions do not work when backup is running.
Notice
Do not remove USB memory stick when backup is running.
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