iR2022 accommodates 2 of 2.5SATA III hard drive and offering both RAID 0 and RAID 1 functions . Uses the RAID 0 function to integrate the capacity of one hard drives and to enhance both read & write performance. On the other hand, uses RAID 1 function for data redundancy by mirroring data among both hard drives to prevent the event of a hard drive failure causes system shutdown. Model No: iR2022 Interfaces: 7+15-pin SATA III (6.0Gb/s) Port Compatible Drives: 2.5 SATA III, II, I HDD/SSD (x2) Raid Level: RAID 0 / RAID 1 System Monitoring: Fan Failure, Overheat. HDD/SSD Failure Cooling System: 4 cm Low Noise Fan Operating System: Windows, Linux Function Control Interface: GUI (Windows Only)