Feature Specifications Port Type Thunderbolt 2 Onboard Storage processor RAID-On-Chip Onboard Onboard Cache Memory 512MB DDR 3 Cache Memory with ECC Protection Number of Ports 2x Thunderbolt Ports RAID Level 0, 1, 5, 6, 10 and JBOD Operating System Windows 7 and later Windows Server 2008 and later macOS X 10.8.5 and later Driver embedded into macOS X 10.9 and Later Max.Capacity Up to 56TB Number Of drives Up to 4 Drive Interface SAS, SATA Drive Form Factor 3.5" and 2.5" Material Brushed aluminum housing Advanced RAID Features Advanced RAID Features Configurable RAID Block Size up to 1MB Flash ROM for Upgradeable Firmware DV Mode Technology Storage Health Inspector Redundant RAID Configurations Bootable RAID Array EFI BIOS for Mac Platform Multiple RAID Partitions supported Online Array Roaming Online RAID Level Migration (ORLM) Online Capacity Expansion (OCE) RAID Initialization Background/Foreground/Quick Global Hot Spare Disk support Automatic and configurable RAID Rebuilding Priority NVRAM with Write Journaling enhances RAID integrity Disk Format compatible: 512, 512e, 4Kn Larger than 2 TB Drive and RAID Array support Spin down Massive Arrays of Idle Disks support Native Command Queuing Write Back and Write Through Software Compatibility: Time Machine Features Backup and Restore Storage Monitoring and Management Suite RAID Management Suites Browser-Based management tool Password Secured RAID management Suites Default no password needed to access WebGUI in Mac Temperature Power, Present, Active, Fail, Rebuilding and Identify SMTP Email Alert Notification Email Alert Notification Power Supply AC INPUT: 100-240V - 5A 50/60Hz DC OUTPUT: 250W Internal Fan 80x80x25mm, Single Fan Alarm Buzzer Buzzer beeping when failed drive or array occurs Operating Environment Temperature (operating) 5oC 45oC (non-operating) 40oC 65oC Compliance Certification CE, FCC, RoHS, REACH, WEEE Kit Contents 1x 4-Bay Tower Enclosure 4x Drive Trays 1x Thunderbolt Cable 1x UL Power Cord 16x 3.5 HDD mounting screws 16x 2.5 SSD mounting screws 1x Quick Installation Guide 1x Thunderbolt 3 USB-C to Thunderbolt Adapter (TB3-LADP-TB2) Item Dimension (L"xW"xH") 13 x 9 x 12