Features: brand new and high quality Sil3114 SATA PCI Serial ATA host controller card is designed to provide high-performance, low-cost and reliable solutions for users who need to provide storage peripherals through the new serial ATA interface. It can control four independent serial ATA channels, each channel has its own serial ATA bus and supports one serial ATA device. Silicon for Image SiI3114 SATA controller chip complies with PCI specification revision 2.3, 32Bit, 33/66Mhz, and complies with Serial ATA 1.0 specification. Provides four independent channels, supports up to four serial ATA drives, supports RAID0 (striping), RAID1 (mirroring), RAID5 (parity for RAID), for RAID 0 + 1 (mirroring + striping) and oncatenation modes. When not in a for RAID set, the HDD operates normally and supports SATA up to 150MB/sec. for RAID function, supports for RAID function 0 or 1, supports coexistence of for RAID sets and non-RAID HDDs, and allows HDDs of different sizes to be configured in for RAID sets. Operating system: for Windows 98SE / ME / NT4.0 / 2000 / XP / Vista / Win 7 32/64 bit. Pentium class computer with an available PCI slot. Specifications: Material:PCB+ Metal Chip:Silicon for Image Sil3114 OEM: OEM Available Weight: about 95g Note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size. Package includes: 1x 4 Port PCI to Sata Expansion Card