Samsung UN46ES7500F E-Manual page 367

the device and check the connection.
ΠIf a file you deleted from the PC is still
found when you run Smart Hub, use the
"Empty the Recycle Bin" function on the
PC to permanently delete the file.
ΠIf the database of the saved file list cannot
be constructed because there is no free
space on the USB device, you may not be
able to view a new file even if you have
added the file to the USB device.
Supported Devices
ΠCertain types of USB Digital camera and
audio devices may not be compatible with
this TV.