LG 42PA4500 Owner's Manual page 220

Warning when using USB storage device
❐
✎ USB storage devices with a built-in auto recognition program or its own
driver may not work.
✎ Some USB storage device may not work or may work improperly.
✎ Use only those USB storage devices formatted with FAT32 or NTFS File
System provided by Windows.
✎ For external USB HDD, use devices with less than 5V-rated voltages and
500 mA-rated current.