Feature:1. Using original JMB585 main control chip, highspeed and stable transmission, strong reliability.2. LED indicator monitoring. The blue LED indicator is gentle and not harm to your eyes.3. The blue light is always on when the power is on and the disk is read, and the blue light flashes when reading, and the working status of the hard disk is monitored at any time.4. Goldplated design, scratchresistant and wearresistant, more stable transmission, compatible with PCIE X4, PCIE X8, PCIE X16.5. Support multiple systems for OS X/ Windows7/8/10, plugandplay without drive.Specification:Item Type: Expansion CardBuilt-In Interface: PCI-E 4XOutput Interface: 5 x SATA3.0Support Hard Disk: SATA interface hard diskSupport System: For OS X/ Windows7/8/10Installation Method: In-Line PCI-E card slotSize: Approx. 12 x 8cm / 4.7 x 3.1in.Package List:1 x Expansion Card5 x SATA Connect Cable1 x Bracket