Zagall SuperSpeed USB 3.0 Aluminum 5.25"/3.5" Enclosure, For SATA HDD/Optical Drives (Black) For CD-ROM, CD-RW, DVD-ROM, Combo Drive, DVD/RW Drive and 3.5" hard drive Compliant with USB 3.0 Spec Revision 1.0 Supports the following speed data rate: Low-speed(1.5Mbps)/ Full-speed(12Mbps)/ High-speed(480Mbps)/ Super-speed(5Gbps) Auto negotiation between SATA I (1.5Gbps) & SATA II (3.0 Gbps) Supports LEDs for Power & HDD activities indication