1.3 SATA+1 IDE to PCI RAID Card Adapter VIA6421 2.Stable and reliable chip VIA VT6421 chipset. Description : 3 SATA port and 1 IDE 40p port allow to connect more devices to your computer. Stable and reliable chip VIA VT6421 chipset. PCI specification revision 2.1 compliant with 33Hz & 32-bit data. Serial ATA specification revision 1.0 compliant. UDMA6 ATA/133 specification compliant. Backwards compatible with Ultra ATA/100,Ultra ATA/66.Ultra ATA/33, EIDE/Fast ATA. 3 SATA port (2 internal and 1 external, external one shares channel with one of internal one) and 1 internal IDE 40pin port. Data transfer rate up to 150MB/sec (1.5Gbps) per SATA channel. Data transfer rate up to 133MB/sec per IDE channel. Supports 2 independent Serial ATA channels. Supports 2 IDE channels and connects up to 2 IDE devices. Supports RAID Level 0. RAID Level 1 and JBOD. Features independent 256-byte FIFOs per channel for host reads and writes. Large LBA support for drives above 137GB. Supports PCI IRQ sharing to save valuable resources for other I/O expansion cards. Supports PCI plug and play. Operating System: Windows 98/SE, ME, 2000, NI4.0, 2003, XP, Vista & Windows7. Package content: 1X Brand New 3 Port SATA & 1 Port IDE PCI Expansion I/O Card. 1X CD Driver.