Compatibility: * Hi-speed USB (2.0) File format: * NTFS * FAT * FAT32 * EXT-3 * HFS Memory capacity: * Maximum 1 TB If a HDD with USB power peak current higher than 500 mA is used, a separate power supply for it may be needed. Please consult the user manual of the HDD for detailed information. Tip: For optimal connection, do not use a hub.