4 Channels PCI-X Serial ATA II Host Raid Controller Card with Silicon Image SiL3124 chipset. Specification: PCI-X Interface. Compliant with PCI-X Specifications Revision 1.0a. Fully Plug and Play compatible. SATA II Interface. Intergraded Serial ATA Link and PHY logic. Compliant with Serial ATA 1.0 and Serial ATA II Extensions to Serial ATA 1.0 Specifications. Supports Serial ATA Generation 2 transfer rate of 3.0Gb/s. Supports Raid function: 0, 1, 5, 10. Supports Serial ATA II: Port Multiplier 1.0 Specifications. Backward compatible to SATA 1.0 Specification. Supports four independent Serial ATA channels. Independent Link, Transport, and date 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. System Requirement: Driver supported: MS Windows 2000/XP/Vista, Linux, Mac OS 10.4x