1. Compliant with Serial ATA Specification 3.0, down compatible with SATA2.0 SATA1.0.2. Conformance to PCI-Express v2.0 specifications, down compatible with PCI-Express v1.0.3. Supports communication speeds of 6.0Gbps,3.0Gbps and 1.5Gbps.4. Supports Gen 1i,Gen 2i,Gen 2m, Gen 2x and Gen 3i.5. Supports two SATA Ports.6. Supports AHCI 1.0 and IDE modes.7. Supports Native Command Queuing(NCQ)8. Supports Port Multiplier based switching or command based switching.9. Supports Hot Plug and Hot Swap.10. Compatible with SATA 6G,3G and 1.5G Hard DrivesSpecification:Product interface: PCI-E 1X 4X 8X 16XChipest: JMS582BSupport specification: SATA3.0 7PINBus interface: PCI-Express X1 slotExtension interface: 2 SATA3.0 interfacesSystem requirements: there is an available PCI Express X1 slot, while supporting PCI-E X2 X4 X8 X16Operating system: Windows10/8/7 (32/64 bit) / Vista (32/64 bit) / XP/2003/2008/linuxColour:blackMaterial:MetalPackage Contents:1 * riser card 1 * half-height bezelOnly the above package content, other products are not included.Note: Light 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.