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: 2 x Serial ATA/600 Serial ATA InternalPorts: 2 x Serial ATA/600 Serial ATA ExternalForm Factor: Low-profile Plug-in CardPackage Contents: SATA III 4-port PCI-e Version 2.0, x2 Slot Controller Card Driver CD Standard and Low Profile Brackets 2 x 19 SATA Cables User Manual Environmentally Friendly: YesEnvironmental Certification: WEEEPackage Contents SATA III 4-port PCI-e Version 2.0, x2 Slot Controller Card Driver CD Standard and Low Profile Brackets 2 x 19" SATA Cables User Manual "
Pros: -Works with native Windows MSACHI drivers I got close to native SATA III speeds with a Mushkin Chronos Deluxe 240GB on an old Gigabyte P55-UD3R motherboard AS-SSD SeqTest Read 486.55 MB/s Write 296.61 MB/s 4K Read 20.04 MB/s Write 65.02 MB/s Was a bit faster than the ASMedia 1061 card.
Cons: -Marvel drivers are terrible, stick with the msachi drivers -Requires a PCIe V2 slot, in PCIe slot performance will be SATAII like.
Overall Review: Use HWiNFO064 to check your PCIe slots prior to buying this card, not worth it if your ports are not PCIE V2.