Vantec 4-Channel 6-Port SATA 6Gb/s PCIe RAID Host Card with HyperDuo Technology (UGT-ST644R) 4 Channel for Additional Devices. This Card will let You Grow as Your Needs Grow to Add more Devices to your System 6 Flex Configurable Port for configuring as Internal SATA or External eSATA Port using simple setting on the Host Card SATA III 6Gb/s on Every Channel for all your SSDs and HDD. This Offers the Maximum Performance for all your Drives Port Multiplier Function For Multi-Bay Enclosures to Minimize multiple cable and Maximize Storage, Support both FIS and Command-based Switching RAID 0, 1, 10 and HyperDuo Function for Redundancy to Keep your DATA Safe and at the same time Faster Disk Access More lanes to Prevent bottleneck for All the SATA III drives Moving Data between the Drives and the System Board Low Profile Bracket Included to Simplify Your Installation into Standard Desktop or SlimLine or Low Profile System HyperDuo is a Technology Created by Marvell that Encompasses Both SSD and HDD Technologies to give You the Speed Without the Premium Price Support Windows XP, Server 2003, Server 2008, Vista, 7, 8, 8.1, 10