Compatible with Serial ATA Specification 3.0, backward compatible with SATA2.0 SATA1.0. Compliant with PCI-e v2.0 specifications, backward compatible with PCI-e v1.0. Supports communication speeds of 6.0Gbps, 3.0Gbps, and 1.5Gbps. Supports Gen 1i, Gen 2i, Gen 2m, Gen 2x, and Gen 3i. Supports two SATA ports. Supports AHCI 1.0 and IDE modes. Supports Native Command Queuing (NCQ). Supports port multiplier switching or based switching. Supports Hot Plug and Hot Swap. Compatible with SATA 6G, 3G, and 1.5G hard drives. Specification: Product Interface: PCI-E 1X 4X 8X 16X Chipset: JMS582B Supported Specification: SATA3.0 7PIN Bus Interface: PCI-E X1 slot Expansion Interface: 2 SATA3.0 interfaces System Requirements: Requires an available PCI-E X1 slot, also supports PCI-E X2 X4 X8 X16 Operating System: Windows10/8/7 (32/64 bit) / Vista (32/64 bit) / XP/2003/2008/Linux Color: Black Material: Metal Package Contents: 1 * riser card, 1 * half-height bracket. Only the above package contents are included; other products are not. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.