Honda Civic Owner's Manual page 149

Do not use an extension cable to
the USB adapter cable equipped
with your vehicle.
Do not keep a USB flash memory
device in the vehicle. Direct
sunlight and high heat will damage
it.
We recommend backing up your
data before playing a USB flash
memory device.
Some devices cannot be powered
or charged via the USB adapter. If
this is the case, use the accessory
adapter to supply power to your
device.
Depending on the type and
number of files, it may take some
time before they begin to play.
Audio System (Models without navigation system)
Depending on the software the
files were made with, it may not be
possible to play some files, or
display some text data.
Depending on the type of
encoding and writing software
used, there may be cases where
character information does not
display properly.
The order of files in USB playback
may be different from the order of
files displayed in PC or other
devices etc. Files are played in the
order stored in USB flash memory
device.
Some versions of MP3, WMA, or
AAC format may not be supported. If
an unsupported file is found, the
audio unit displays UNSUPPORTED,
then skips to the next file.
In WMA or AAC format, DRM
(digital rights management) files
cannot be played. If the system finds
a DRM file, the audio unit displays
UNPLAYABLE FILE, and then skips
to the next file.
Combining a low sampling f requency
with a low bitrate may result in
extremely degraded sound quality.
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