The PEXSAT34RH 4-Port PCI Express 2.0 SATA Controller Card with HyperDuo adds 4 AHCI SATA III ports to a computer through a PCIe slot (x2), delivering multiple internal 6Gbps connections for high-performance hard drives and Solid State Drives (SSDs).Featuring HyperDuo technology, the SATA card offers SSD auto-tiering which lets you balance the performance advantages of SSD storage with the cost-effectiveness and large capacity of standard hard drives. By combining SSD and HDD drives into a single volume (up to 3 SSD + 1 HDD), HyperDuo discreetly works in the background to identify and move frequently accessed files to the faster SSD drive(s) for improved data throughput - up to 80% of SSD performance! (Note: The HyperDuo automatic storage tiering feature is compatible with computers that use a BIOS.)The PCIe SATA controller card supports Port Multiplier (PM), enabling multiple SATA drives to be connected to one port over a single cable, for a total of 7 drives (Up to 4 drives through PM on one port, and a single drive to the remaining 3 ports). Plus, the SATA controller card offers an effective hardware RAID solution, with native RAID (0, 1, 1+0) support.Features:- Leverage SSD performance and standard HDD capacity with HyperDuo technology- Maximize system capability with SATA III connection speeds- Fit any standard or low profile chassis with included bracketsSpecification:- Bus Type: PCI Express- Card Type: Standard Profile (LP bracket incl.)- Chipset ID: Marvell - 88SE9230- Industry Standards: - PCI Express 2.0- Serial ATA 3.0 specification- Interface: SATA- Port Style: Integrated on Card- Ports: 4- LBA support: 48-bit- Max Drive Capacity: Currently tested up to 4TB per drive- Port Multiplier: Yes- RAID: Yes- Type and Rate: SATA III (6 Gbps)- Connector Type(s): 1 - PCI Express x2 Male- Internal Ports: 4 - SATA (7 pin; Data) PlugSupported RAID Modes:- JBOD - (Just a Bunch of Disks)- RAID 1 (Mirrored Disks)- RAID 0 (Striped Disks)- RAID 10 (1+0; Striped set of Mirrored Subset)