Supporting Operating System Windows 7 / 8 / 8.1 / 10 (32 / 64 bit) (GPT / MBR partition) Mac OS 10.3 or later One Button Interface Selection User can choose either USB 3.0 or eSATA interface to connect this enclosure to the computer. The selection button in the front panel. Important Note: 4Kn Native Drive is Not supported Motherboards eSATA port Must support Port Multiplier in order for your computer to recognize multiple hard drive if the unit is connected to eSATA port. You can use Only One interface at a time. (Either USB 3.0 or eSATA)
	Smart Fan Function 3 Level of fan speed. Auto or Manual mode fan speed selection. Built-in temperature sensor to control fan speed in auto mode.
	4 x Hard Disk Drive Support 4 x 3.5" SATA hard drive up to 12 TB per drive. Support 4 x 2.5" SATA hard drive up to 10 TB per drive. (bracket adapter required, sold separately, search ASIN: B073R51B3Y)
	Power Sync & S.M.A.R.T Power On / Off in synchronization with Computer. (Does not support auto power on when encounter power failure). Support S.M.A.R.T.
	USB 3.0 & eSATA Interface Transfer rate up to 5.0Gbps via USB 3.0 and 6.0Gbps via eSATA connection.