Connectivity    1 x USB 3.0 portDrives and Expansion    Up to four (4) 3.5″ SATA II/III hard disk drives (sold separately).    Drives of any manufacturer, capacity, spindle speed, and/or cache can be used. No carriers or tools required. Click here for drive recommendations.    Expandable by adding

Connectivity    1 x USB 3.0 portDrives and Expansion    Up to four (4) 3.5″ SATA II/III hard disk drives (sold separately).    Drives of any manufacturer, capacity, spindle speed, and/or cache can be used. No carriers or tools required. Click here for drive recommendations.    Expandable by adding drives or hot-swapping drives with larger ones. Use the Capacity Calculator to estimate available storage in various configurations.Management    Drive bay indicator lights, capacity gauge, status lights    Drobo Dashboard version 2.6 or laterOperating System Support    Mac OS X 10.7 and higher    Windows 8/8.1 32 and 64 bit    Windows 7 32 and 64 bitFile System Options    Mac OS X: HFS     Windows: NTFSHardware Features    Carrier-less Drive Bays    Power Fail Protection    Kensington Lock Port for Security (lock not included)Additional Software Features    Maximum System Capacity: 32TB    Drive Spin Down    Dim Lights    OS X Time Machine SupportSize and Weight    Desktop Form Factor    Width: 5 in (127 mm)    Height: 6.3 in (160 mm)    Depth: 10.7 in (271.8 mm)    Weight: 6 lb 11.3 oz (3 kg) without hard drives, power supply, or packagingPower and Cooling    External Power Supply:        AC Input – 100-240VAC~2A, 50-60Hz        DC Output – 12V, 4.16A, 50W max    Dual, fixed, variable speed cooling fansBox Contents    Drobo    6 ft (1.8 m) USB 3.0 cable    6 ft (1.8 m) power cord with power supply    Quick Start Guide