Kaba ILCO FDU User Manual page 210

Auditing
Note that if there is not enough space available on the USB stick, this operation
will fail and an error message will be displayed on the screen. The majority of
existing USB memory sticks will work with the FDU. If the USB stick is not
compatible with the FDU, it will not be detected and the FDU will not display
any error message to the user. Another type of USB memory stick should then
be used. Additionally, if the USB stick is not formatted, the FDU will detect it
but will not be able to access it further and will display an error message. If this
occurs, format the USB memory stick on a PC, as per the manufacturer's
requirements or contact Kaba Ilco for assistance
If ever there is no USB stick plugged in the FDU, or the FDU does not
recognize the USB memory stick plugged in, the following message will be
displayed:
Kaba Ilco Lodging Access Control System
Use separate directories, or rename audit files once
transferred to a PC, to maintain a historical record of
audits.
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