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Notes on USB device
Compatible USB devices
• USB mass storage class
For details as to whether your USB
memory/USB audio is compatible with
USB mass storage class, please contact
the USB memory/USB audio manufac-
turer.
• USB standard compatibility 1.1/2.0 full
speed
• File system FAT12/16/32, VFAT
• Maximum current less than 1.0 A
• If devices such as USB hub, extension
cable are connected to the audio sys-
tem, it may not be recognized. In such
case, connect the USB device directly to
the audio system.
• Devices such as MP3 player/mobile
phone/digital camera may not be recog-
nized by the audio system for playing
music.
USB device connection
• When connecting a USB device, make
sure that it is properly connected to the
USB port.
• Do not leave the USB device for long
periods of time inside the vehicle where
the temperature can rise too high.
• Back up any important data beforehand.
We cannot accept responsibility for any
lost data.
• It is recommended not to connect a USB
device that contains data files other than
MP3/WMA/AAC format.
Recording MP3/WMA/AAC files on a
USB device
• Playback or display may not be possible
depending on the type of USB device in
use or the condition of the recording.
• Depending on the connected USB mem-
ory, the files may be played in different
order from the stored one.
Compression formats
MP3
• Bit rate:
MPEG1 Audio Layer III: 32 k - 320 kbps
MPEG2 Audio Layer III: 8 k - 160 kbps
MPEG2.5 Audio Layer III: 8 k - 160 kbps
• Sampling frequency:
MPEG1 Audio Layer III: 32 k/44.1 k/48 kHz
MPEG2 Audio Layer III: 16 k/22.05 k/24 kHz
MPEG2.5 Audio Layer III: 8 k/11.025 k/12 kHz
WMA (Ver. 7, Ver. 8, Ver. 9*)
• Bit rate: CBR 32 k - 320 kbps
• Sampling frequency: 32 k/44.1 k/48 kHz
* WMA 9 Professional/LossLess/Voice are
not supported.
AAC*
• Bit rate: ABR 16 k - 320 kbps
• Sampling frequency: 32 k/44.1 k/48 kHz
* Apple Lossless is not supported.
Maximum number of files/folders
• Maximum number of files: 2500
• Maximum number of files in a folder: 255
• Maximum depth of tree structure: 8
• Maximum number of folders: 255
(Root folder is included.)