The S322SAT3R internal drive-mounted SATA RAID adapter lets you connect two SATA hard drives to a single SATA connector on your motherboard, & build a hardware RAID array. This versatile RAID adapter features a built-in hardware RAID controller, supporting JBOD, BIG, RAID 0, & RAID 1 -- to achieve greater drive capacity, secure data redundancy or enhanced system performance. With two included SATA cables you'll have everything you need to ensure a hassle-free installation. This plug-&-play HDD adapter is easy to install, mounting directly to your drive without any additional hardware or software installation. To ensure compatibility with your computer system, the S322SAT3R supports all of the leading operating systems, including: Microsoft Windows (8/7/ Vista/XP/ Server 2008/ Server 2003), Apple OSX (10.9/10.8/10.7/10.6), Linux, & Google Chrome OS™. To maximize performance & utilize the full speed potential of your SATA III hard drives, this HDD RAID controller supports SATA III for transfer speeds up to 6 Gbps when paired with a compatible controller. The S322SAT3R is backed by a Star Tech.com 2-year warranty & free lifetime technical support. The Star Tech.com Advantage Achieve greater drive capacity, secure data redundancy or enhanced system performance with support for RAID 0 / RAID 1 / BIG / JBOD Hassle-free installation with drive mounted controller, included SATA cables & no software or drivers required Maximize performance with file transfer speeds up to 6 Gbps when paired with a SATA III HDD & controller