A PCI-e version 2.0, x2 slot card from IOCREST, uses the newest Marvell 88SE9235 chipset single chip 4-port Gen III 6Gb/s host controller. Each PCI-Express 2.0 lane provides up to 500Mb/s of throughput.Host Interface: PCI Express 2.0Data Transfer Rate: 6 Gbit/sDrive Type: Serial ATA/600Ports: 4 x Serial ATA/600 Serial ATA InternalForm Factor: Low-profile Plug-in CardPackage Contents: SATA III 4-port PCI-e Version 2.0, x2 Slot Controller Card Driver CD 2 x 19 SATA Cables Standard and Low Profile Brackets User Manual Environmentally Friendly: YesEnvironmental Certification: WEEEPackage Contents SATA III 4-port PCI-e Version 2.0, x2 Slot Controller Card Driver CD 2 x 19" SATA Cables Standard and Low Profile Brackets User Manual "