Samsung UN46ES7500F E-Manual page 366

from damage or loss of data. SAMSUNG is
not responsible for any data file damage
or data loss.
ΠConnect a USB HDD to the dedicated USB
(HDD 5V 1A) port.
ΠDo not disconnect the USB device while it
is loading.
ΠIf you connect a USB device with a USB
extension cable, the TV may not recognize
the USB device or read the files on the
device.
ΠIf a USB device you connect to the TV is
not recognized, the files on the device are
corrupted, or a file in the list is not played,
connect the USB device to a PC, format