What are the required specifications of HDDs that can be connected (maximum size, etc.)?

The required specifications of HDDs that can be connected are as follows:
-Supported file systems
　FAT16, FAT32 and HFS+
(For HFS+, the history cannot be written with journaled formats.)

-HDD size restrictions
　This depends on the file system specifications.

-Others
　When multiple partitions are set, only the first partition can be used.