LG 50PA4500 User Manual page 56

✎ It is recommended to use USB Memory Stick with 32 GB or less and USB
HDD with 1 TB or less.
✎ If a USB HDD with power-saving function does not work properly, turn the
power off and on. For more information, refer to the user manual of USB
HDD.
✎ Data in the USB storage device can be damaged so back up important
files in other devices. Data maintenance is the user's responsibility. The
manufacturer is not responsible for data loss.