LG 50PM470T User Manual page 152

✎ Use of HDD (Hard Disk Drive) is recommended. For SSD (Solid State Drive),
the number of writes/clears is limited.
✎ A USB HDD size of between 40 GB and 2 TB is recommended.
✎ After USB Device Initialization the USB HDD will not be recognized on a PC.
✎ Data stored on the USB device may be damaged. Data maintenance is the
user's responsibility and the manufacturer is not responsible for data loss.
✎ If there is problem with a data sector on the USB storage device, it may not
work properly.