1. Two SATA hard disks support serial hard disks, which can be displayed when connected to a computer 2. When offline, press and hold the copy button for 3 seconds to clone drive A to drive B 3. Metal shell has faster thermal conductivity 4. The capacity of a single hard disk is up to 6TB, and the total capacity is up to 12TB 5. Power interface: DC-3A/12V 6. Support hard disk: HDD/SDD3.5/2.5 inch SATA hard disk 7. Size: 134x115x72mm