Which type of USB external hard drive can I use with my viewer?

• Use a hard drive that meets the following requirements:
  • USB Mass Storage Class-compatible
  • Formatted in FAT or FAT32
  • Self powered with its own AC power supply
  Note:
  • Not all USB Mass Storage Class devices are supported.
  • Bus-powered hard drives are not recommended.
  • Avoid using a hard drive with multiple partitions.
  • Always use the AC adapter with the viewer.