SpecifacationSupports Serial ATA Generation 2 Transfer Rate of 3.0 Gb/s Supports Serial ATA II: Port Multiplier 1.0 Specifications Supports Raid Function 0, 1, 5, 10 Compliant with PCI Express Specification Revision 1.0a 1-Lane (x1) PCI Express Connector Fully Plug & Play Compatible Integrated Serial ATA Link and PHY Logic Compliant with Serial ATA 1.0 and Serial ATA II Extensions to Serial ATA 1.0 Specifications Backward Compatible to SATA 1.0 Specification Supports Four Independent Serial ATA Channels Independent Link, Transport, and Data FIFO Independent Command Fetch, Scatter/Gather, and Command Execution Supports Legacy Command Queuing (LCQ) Supports Native Command Queuing (NCQ) Supports Non-zero Offsets (NCQ) Supports Out of Order Data Delivery NCQ Supports FIS-based Switching with Port Multipliers Package detailPackage Info Dimension: L 9.25 x W 6.5 x H 1.4 inch Weight: 0 lb UPC: 810154012749 Package Includes 4 channels PCI-Express Serial ATA II Host Controller Card 2x SATA Cables Driver CD User Manual Low Profile Bracket Software requirementWindows 8 /7/10/XP/2000Vista Mac OS 10.4x Red Hat Linux 8.0.9.0 SuSE Linux 8.1, 8.2 United Linux 1.0