Samsung 4000 Series User Manual page 151

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USB (HDD) is not supported.
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Connect USB HDDs to the dedicated port, USB 1 (HDD), only.
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Do not disconnect the USB device while it is loading.
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The higher the resolution of the image, the longer it takes to display on the
screen.
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The maximum supported JPEG resolution is 15360 x 8640 pixels.
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If a file is corrupted or the TV does not support the file type, the "Not
Supported File Format" message appears.
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If the files are sorted by
◀
1000 files in each folder.
for LED 4000. 5000 series
View, the TV can display the names of up to
Folder
English
for LED 5500 series
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