Mediasonic ProRaid H8R2-SU3S2 8 Bay 3.5" SATA Hard Drive External Hard Drive Enclosure - USB 3.0 & eSATA Supports all brands of 3.5" SATA I/II/III hard disk drive up to 10TB per drive up to 8 x 10TB. Support hard drive transfer rate up to SATA III Switch USB 3.0 or eSATA interface by pressing one button; transfer rate of up to 5.0Gbps via USB 3.0, up to 3.0Gbps via eSATA. Compatible with Mac USB 3 Raid Support: Raid 0 (Spanning) JBOD, Raid 0, Raid 50, 2 x Raid 0 (Spanning) JBOD, 2 x Raid 5 (Striped set with distributed parity), 2 x Raid 10 (Mirroring + Striping) Smart Fan comes with auto and manual modes, and three levels of speed for best convention. Power off in synchronization with PC eSATA interface requires Port Multiplier w/FIS-based switching on main computer to enable access to multiple HDDs simultaneously