The Vantec 4-Port SATA PCI Combo Host Card w/RAID is the easiest way to update any computer with SATA & eSATA ports. Once installed, this combo host card will add two SATA & two eSATA ports with two independent channels. This allows support of two SATA devices at speeds of up to 150MB/s whether it is an -- enclosure, SATA hard drive or SATA device. Equipped with RAID 0 (Striping), RAID 1 (Mirroring) or Individual mode, this card has it all. The Vantec 4-Port SATA 150 PCI Combo Host Card w/RAID is the easiest way to update any computer system.