Make the jump to Serial ATA performance with a four-port RAID card from StarTech.com. You get four RAID-ready internal Serial ATA ports for your high performance Serial ATA hard drives. Whether you need Striping (RAID 0), Mirroring (RAID 1), or both (RAID 0+1), this card has you covered. The PCISATA4R1 also supports RAID 1+S (Mirrored-Sparing), which automatically replaces a failed hard drive and rebuilds the system if a booting hard drive fails.It also includes a low profile bracket for adapting to slimline or small form factor system applications. Plus, guaranteed performance backed by our lifetime warranty and FREE lifetime tech support makes this the perfect upgrade for power users.