The MiniPro™ FireWire 800, USB 3.0 portable hard drive enclosure is equipped with the industry's best Oxford chipset, which is approved by many professional Audio/Video hardware and software manufacturers. The unit is compatible with 7mm, 9.5mm, 12.5mm and 15mm SATA 2.5" hard drives and is powered using Firewire or USB power, eliminating the need for a power adapter. The solid, stylish enclosure is manufactured using thick aluminum metal alloy, which assists in dissipating heat and providing excellent protection. Finally, the HDD spin-down feature ensures efficient operation by reducing power consumption. When your computer enters sleep mode, the hard drive spins down to minimize power consumption. The hard drive spins up automatically when the host system wakes up.