Rosewill R2-JBOD storage enclosure

R2-JBOD Aluminum 3.5" USB 2.0 DUAL-BAY External Enclosure - AC Adapter 100-240 VAC, 12V/4.2A output.
- Material Full Aluminum Cover, metal tray.
- Internal Interface SATA I/II HDD.
- External Interface USB 2.0.
- Fan 1 x 50mm cooling fan (Internal Tray).
- USB Supports Win 2000/ME/XP/VISTA, and Mac OS 9.x/10.x and above, Linux kernel after 2.4.1.0.
- Power Adapter, 100-240 VAC, 12V/4.2A output.

<b>This device can support JBOD& BIG Mode.</b>
JBOD：It enables each hard drive to be seen separately as single drives, showing 2 HDD capacities.
BIG: It concatenates a series of physical hard drives as a single large volume; hard drive A and B are combined into a storage capacity that is equal to the sum of each of the physical hard drives A and B.It is also possible to create a BIG volume using only a single hard disk drive connected to SATA connector 1, and then increase the storage capacity of the volume later by adding another hard disk drive to SATA connector 2, and pressing reset button. However, it is not possible to expand an existing BIG volume by adding another hard disk drive to SATA connector 2 and still preserve any existing data on that volume.
Note: Backup before formatting your HDD.