RATOC Systems RS-EC32-U3RX / RS-EC32-U31R 3.5-inch HDD RAID Case for 2 Drives This is a set of two units with different model numbers. *Not compatible with 2.5-inch HDDs/SSDs. Purchased around 2017. It was operating and in use without any problems until recently. I am selling it because I am replacing it. ◯ Operation Modes ・RAID1 (Mirroring) ・RAID0 (Striping) ・JBOD (Spanning) ・SINGLE Everything in the photos is included. The USB cable is not included. Please consider this before purchasing. This is a used item. Thank you.