The Vantec 2-Port SATA II 300 Host PCIe Sata Card allows you to easily add two SATA II ports to your computer. The device supports other SATA devices, SATA optical hard drives and SATA hard drives. The PCI RAID card is compatible with a PCI-e slot and provides two independent channels to support SATA devices. It supports RAID 0 (striping), as well as RAID 1 (mirroring) for speed or data protection. The SATA RAID card comes with everything you need to set up two unique channels for your devices.