RocketU HighPoint Dual USB 3.0 for Mac Components Continue to supply sufficient power to the portable device SuperSpeed USB.SVGA converter enhances productivity, improves "desktop" placement, extends the vision work area to multiple monitors. 2 USB 3.0 Type-A ports with 5Gb/s Transfer Bandwidth each port PCI-Express Gen 2 x1 Supports up to 2 external USB HDD/SSD Supports RAID 0, 1, and JBOD Supports macOS 10.6 ~10.7.4, 10.8.3 ~ 10.12 Optimized for external USB SSD's, hard drives and drive enclosures Backwards compatible with USB 2.0 & 1.1 external drives and enclosures Hot-Swap and Hot-Plug