Number of Ports: 4 PortsMeets Serial ATA 3.0 specification, backward compatible with SATA2.0 SATA1.0Compliant with PCI-Express v2.0 specification, backward compatible with PCI-Express v1.0.Supports communication speeds of 6.0 Gbps, 3.0 Gbps, and 1.5 GbpsSupport Gen 1i, Gen 1x, Gen 2i, Gen 2m, Gen 2x, and Gen 3i.Supports Four SATASupport AHCI1.0 mode and IDE modeSupport native command queue (NCQ)Supports FIS based on port multiplier switches or command switches.Hot-swappable and hot-swappable.Compatible with SATA6G, 3G and 1.5G Hard DrivesBus interface: PCI-Express x1 slot(Compatible PCI-E X2 X4 X8 X16 )Extension ports: 4 SATA3.0 interfacesFeature: with two heat sinks for long time safe working.Colour:blackMaterial:Plastic + metalSize:12*7*1.9cmPackage Contents:1* expansion card1* driver CDOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.